Java chat program eclipse jobs

I'm looking for a skilled professional who can solve advanced level CTF challenges, in various categories. I need someone who can tackle challenges in Web Exploitation, Binary Exploitation, Cryptography, as well as other categories like web, forensics, osint, and more. Key Responsibilities: - Solve advanced level CTF challenges ...experience with CTF challenges - Proficiency in solving challenges in Web Exploitation, Binary Exploitation, Cryptography, web, forensics, osint, etc. - Proven track record of solving advanced level CTF challenges - An understanding of security concepts Please note that the specific programming languages or platforms to be used in solving the challenges are not specified, but your background in Python, Java, C++, Ruby, or other relevant languages ...

I'm in need of a mobile chat application development, with specific functionalities that cater to my needs. Interested freelancers should have a vast understanding of mobile chat app development, and a keen attention to detail. Here are the key features needed: - Group Chats: The application should support communication among a group of people. A solid grasp on managing larger group dynamics within chat applications would be beneficial. - Emoji Support: The application should support the use of emojis for enhanced and fun interaction. Prior experience integrating emojis into mobile applications is highly preferred. Overall, this is a project that requires a specialised set of skills in mobile app chat development, experience in group chat dynamic...

...seeking the expertise of a seasoned developer to create a customized chat functionality for a project I'm currently running. After careful consideration, I've decided to focus on group text chat as the core communication channel. Here's what I'm envisioning: - Group Messaging: The core communication method in use will be group messages. I want the developer to build a robust system where users can create, engage, and manage group chats efficiently. Experience in building similar platforms will be a significant advantage. - Media Sharing: The chat interface should be modern and dynamic, capable of handling in-message media sharing. This means users should be able to share images, videos, and other rich media content within the chat conve...

OTA upgrade tool program Pure command line tool Parameter control Output log to file Including nginx view log directory function configuration use UDP

I'm seeking assistance with an urgent issue that's emerged with my softphone engine. - **Operating System**: My system is running on Windows. - **Programmin...issue that's emerged with my softphone engine. - **Operating System**: My system is running on Windows. - **Programming Language**: Unfortunately, the programming language of my softphone engine has been omitted. I believe it may be C#, Java, or C++. It's imperative that the freelancer is comfortable with these languages to handle the issue. - **Timeline**: I'm in need of immediate assistance to solve this problem. Ideal candidates should be able to troubleshoot softphone issues and have experience with Windows software development. Experience with C#, Java, and C++ is a plus. The ability to...

...including ID cards, receipts, invoices, paper, and passport photos, and saving them in JPEG format. As such, the app should be able to: - Recognize and accurately scan ID cards, receipts, invoices, paper, and passport photos - Provide a seamless and user-friendly experience for scanning documents - Showing Auto or Manual Edge Cropping, Image Rotation - Using OpenCV - Native Android (Android Studio), Java I would like the app to be specifically tailored for Android, ensuring a smooth user experience and a clean, intuitive interface. Ideal Skills and Experience: - Proficiency in Android development - Experience in developing document scanning apps - Familiarity with image recognition and processing - Ability to create a simple and user-friendly interface - Knowledge of saving...

I am seeking a proficient programmer to build a program that helps identify profitable product leads. The application should do the following: - Scrape product UPCs from gowholesale.com. You don't need to integrate a login system, as access to this information is free. - Use UPC data to perform a search on eBay to see if the item is available on the platform. - Generate a profit prediction report based on eBay's item purchase history. The ideal freelancer for this job would have great scraping skills, experience with eBay's API, and be able to develop a friendly user interface. A background in eCommerce profitability analysis would also be advantageous. Key programming languages for this job include Python and JavaScript. Previous experience with web scraping libr...

I have a source code for android video streaming app in java, xml, and i need to change the design of the app frontend I am looking for someone who can make changes to android app code design and recreate the frontend. below i have attached the design of my app, and want to reformat it according to zee5 app design. If you feel its a good fit for you, i welcome your bid. thanks.

Overview: We are looking for an experienced Java developer to refactor an existing code base to incorporate several design patterns and improve overall code quality. This project involves enhancing the structure and maintainability of the code by integrating various design patterns, such as Dependency Injection (DI) using Google Guice, Listener, Builder, Singleton, and, optionally, Factory design patterns. The ideal candidate should understand these patterns strongly and have experience refactoring legacy code. Key Responsibilities: 1. Refactor Service Classes with DI Pattern: - Utilize Google Guice API to implement Dependency Injection across all service classes. - Ensure that all dependencies are injected and managed by the Guice framework. 2. Apply Listener Design Pattern...

...experienced Java developer who can integrate a cloud-based database into my project. Ideal Skills: - Strong proficiency in Java - Prior experience with database integration - Specifically, experience with cloud-based databases, Microsoft Azure in particular, is a big plus The Project: - Your primary task will be to integrate Microsoft Azure, a cloud-based database, into an existing Java project. - The project already has a well-defined structure and the database will serve as a key component. - The database integration should be secure, efficient, and scalable, meeting the highest standards. - There will be no need for user authentication or API integration, as this project is solely focused on database integration. Please only apply if you have good experienc...

I'm requiring a proficient Java developer for a college project. The main task will be building a web application along with database integration. I'll need you to implement vital functionalities, such as: - A user registration panel - A user login page - Fee structure - Contact us section - Admin as well as user registration option - Subjects and courses - Basic website navigation functions For the front end, HTML and CSS skills are necessary to render a clean and minimalist design. It's vital you're experienced in these domains and can provide examples of your past work. Looking forward to your proposals.

...I have 2 chapters to finish. in those 2 chapters i need your help on coding. my subject being the digitization of the conversation between a person with hearing loss and a doctor. my desire from you is to program my java application itself as long as you can, it doesn't have to be complete finished. the application has the idea of ​​how you enter it, it puts you in a picture interface, the deaf-mute person does his sign language, and the translation appears below. if you can help me with explanations and about which package to buy from you that would be perfect, thanks! 1) Set up the Java project and the necessary libraries for computer vision and machine learning. 2) Capture video input from a camera. 3) Pre-process the video frames to enhance th quality and ...

I'm in need of an Android developer with experience in Java and Kotlin who can handle issues with fingerprint scanner devices like Futronics FS80H and Mantra MFS100 on Android 14. Key Responsibilities: - Diagnose and resolve compatibility issues with the latest Android 14 version. - Ensure the scanner can correctly detect fingerprints. - Ensure the scanner is responsive and functions as expected. Ideal candidates should have: - Proven experience working with fingerprint scanner devices. - Expertise in Java and Kotlin for Android development. - Strong knowledge of Android 14 and its compatibility requirements. - A track record of troubleshooting and resolving technical issues. This is an urgent project, and I'm seeking someone who can deliver results promptly and ...

We are seeking an experienced full stack developer proficient in Angular, Typescript, Java, and Spring to join our team for an exciting HR Tech project. This project aims to streamline the onboarding process for candidates while enhancing the efficiency of recruitment for companies. Key Features: 1. Onboarding Process: The platform will feature a comprehensive onboarding process for candidates, designed to facilitate a smooth transition into their new roles. This process will consist of four main steps: - Technical Quiz: Candidates will undergo a technical quiz to assess their domain-specific knowledge and skills. - Audio Recording: Candidates will be prompted to record audio responses to predetermined questions, allowing recruiters to gauge communication skills and confidence. -...

I'm in search of a skilled automation tester who has ample experience with Java. My project involves developing a new module that requires comprehensive functional testing. Use Frame work is POM Key Responsibilities: - Implement, design, and create functional test automation frameworks with Java - Thoroughly perform functional testing on new modules Ideal Skills and Experience: - Proficient in Java - Extensive experience in functional testing - Familiarity with Selenium Preference will be given to those who can demonstrate specific experience with using Selenium for automation testing in Java. Remember, quality is crucial. I'm not looking for rushed testing, but a methodical and precise approach. Get in touch. link of implementation :

I'm looking to develop a comprehensive and engaging trainer program geared towards advanced-level participants, focusing on training skills Key Requirements: - Free Training program by Malaysian Government for those who have started working from 1st January 2024 -Self employed and freelancers are welcomed! - The program will be delivered through a mix of online modules and in-person workshops. You should be able to structure the content to be engaging and effective in both formats. - Leadership Training: The main focus of this program will be training in leadership skills. Your experience in leadership development and training is essential. Ideal Skills and Experience: - Proven experience in creating and delivering leadership training programs - Experti...

I'm looking to expand my current portfolio and am interested in purchasing Java-based apps that are already on the Google Play Store. The types of apps I'm particularly involved in include games, utilities, and productivity software. - Types of Apps: Games, Utilities, Productivity - Type of Purchase: Both Individual apps and app bundles are welcomed. - Programming Language: Java-based apps only. For this project, an ideal freelancer would be proficient in app development using Java and has direct experience in uploading and maintaining apps on the Google Play Store. Any freelancers who already have ready-apps that meet the criteria would be preferred. Please include screenshots or links to your app/s available on the Play Store, along with your bid. Let&...

I'm looking to have a chat feature added to my online tutoring platform to facilitate both one-on-one and group conversations between tutors and students. The primary purpose of this chat function is for instant messaging. Key Features Needed: - Instant Messaging: A real-time chat functionality that allows tutors and students to communicate seamlessly. - Group Conversations: The chat should support group conversations as well as one-on-one chats. - Message Read Receipts: The ability for users to know if their message has been read by the recipient. - Typing Indicators: This feature will show when the other person is typing to enhance real-time communication. - Offline Messaging Capability: The chat should allow users to send messages even when the r...

The program must be compatible with Windows 10, which searches for data inserted from a CVS file, therefore which has the possibility of loading a CVS file (one or more files) which, through a search window, tells me whether a certain value (alphanumeric) is present in the CVS file. If you have uploaded more than one, please tell me which one it belongs to. I already have the initial screenshot to show when starting the software and the one of the search window that I will provide, upon acceptance I will also provide a flowchart that explains in detail.

I'm looking for a skilled and experienced freelancer to help me with a mobile app project that comprises both UI/UX design and Java Backend development. Key Requirements: - Proficient in UI Design: You'll need to create a sleek, intuitive, and user-friendly interface for a mobile platform. - Java Backend Development: The app needs to have a robust and efficient Java backend that can handle the expected load and ensure seamless functionality. - Mobile Platform Experience: You should be well-versed in mobile app development, ensuring the final product is optimized for mobile use. Specific Features: - User Authentication: The app will need a secure and reliable user authentication system. - In-App Purchases: You'll need to implement an in-app purchase sy...

I'm in need of a Figma designer to create a chat room that is specifically tailored for mobile use. The primary aim of this chat room is to facilitate social interaction amongst users. Key Features: - Photo and video sharing capabilities - Integration of emojis, stickers and gifs Ideal candidates for this project should have: - Proficiency in Figma and mobile design - A strong background in user experience and user interface design - Previous experience with chat room applications would be a plus The final design should be intuitive, engaging, and optimized for smooth operation on both iOS and Android devices. If this project aligns with your expertise, I'd be keen to hear from you.

I'm looking for an experienced Android developer to create an app that focuses on e-commerce and product management. Key Features: - Social Media I...that focuses on e-commerce and product management. Key Features: - Social Media Integration: The app needs to connect seamlessly with social media platforms. User Authentication: - The app should have a user authentication system. Users should be able to log in or sign up through their social media accounts. And google account Ideal Skills and Experience: - Proficient in Android development (java) - Experienced in integrating social media APIs. - Familiar with user authentication systems, especially social media login. google login Please include samples of your past work that demonstrate your experience with similar projec...

I'm in search of talented coders with a passion, education (may be self or collage etc.) with expertise in Python, Java, and C++ to help me develop a new software application for Windows. Key Project Details: - Programming Languages: Proficiency in Python, Java, and HTML is essential for this role. Your role will involve: - Working on the software development process from conception to final testing and deployment. - Ensuring that the application is optimized for all users and clients, considering the specific requirements and features of this platform. Ideal Skills and Experience: - Strong programming skills in Python, Java, and C++. - Proficiency in developing software applications for Windows. - Experience in creating software from scratch. Looking forward ...

I am working on a compiler construction project using ANTLR4+Java (using visitors to walk the abstract syntax tree and visit key nodes), and I need help with semantic analysis.

I'm seeking a proficient software engineer adept at Java, Python, and C++, who will assist me in website development. The core assignment entails creating a program specifically for WordPress, my preferred CMS. Ideal Skills and Experience: - Comprehensive Java, Python, and C++ knowledge - Previous experience with website development - Proficiency in WordPress CMS Your role will focus on developing a program tailored to my needs, emphasizing functionality and integration within the WordPress platform. It's essential to have a hands-on approach, be detail-oriented, and dedication to creating high-quality, reliable software. Applicants should show a portfolio or examples of previous related work. This will aid in understanding your process, style and sk...

In this project, will be developing an code to sense, share and control another application on a nearby node. The application can be mobile, web or desktop. The application is required to: 1. Sense a nearby node. When a node comes within the communication range and also when it moves out from this ...developing an code to sense, share and control another application on a nearby node. The application can be mobile, web or desktop. The application is required to: 1. Sense a nearby node. When a node comes within the communication range and also when it moves out from this range. An indication should be there when a node is sensed or moved away. 2. Share some content. It can be some message, file, chat etc. 3. Control minimum one feature of the remote node e.g., volume, brightness, wall...

...filtering of the list of processes. 5. Detailed view of specific process information. 6. Temporary storage of uploaded files in the browser. 7. Functionality to delete data being processed and start a new analysis. 8. Automatic process to delete old records from the database. 9. Recording of deletions for audit and regulatory compliance purposes. Technical Requirements: - Development in Java, NodeJs, or Python languages. - Implementation of API for file processing and database access. - Data storage in a database. - Data security and encryption. Expected Deliverables: - Complete development of the Colombia Rama Judicial file analysis system. - Implementation of user interface and specified functionalities. - Exhaustive testing to ensure the quality and accuracy...

...results were obtained, or if the source was unavailable. 5. Executor Function: There should be a function that executes all the sources that were queried and returns a PDF file as in Annex 1. Technical Requirements: • Experience in the development of automated query systems and data processing from external sources. • Knowledge in APIs, web scraping, and web page reengineering processes. Must use Java, NodeJs, or Python. • Ability to structure data efficiently and accurately. • Ability to generate detailed logs of queries and results. • The solution must include the necessary files and documentation to deploy each connector or integrator separately as AWS Lambda functions, Docker containers, or any Serverless service in AWS or GCP. Expected Deliverable...

I am in search of a...vary from website development to application development and data analysis. I need a versatile individual who can adapt to different project requirements and deliver high-quality results. The key functionalities and features required for these tasks may include user authentication, database integration, and payment processing. Ideal candidates should possess: - Strong coding skills in Python, Java, and JavaScript - Experience in website development, application development, and data analysis - Proficiency in user authentication, database integration, and payment processing - Ability to deliver high-quality results within the stipulated timeframes If you are a professional coder with the required skills and experience, I'd be happy to discuss further de...

I am in need of an Android app developer to create a minimalist style application. There will be no need for incorporating in-app purchases. This is a university project, but due to busy schedule I couldn't complete it. I have a deadline until 2 weeks(May 27 2024). The users of the app are Students and recruiters. It needs to be developed from Java language and Firebase as data base language(recommended) for storing any data. The app should only have following features, and no other graphics or extra designing is required. students can:  Browse and search for job opportunities posted by various companies.  Apply for jobs and upload their resumes and other documents.  Schedule and attend online interviews and tests.  Track their application status and receive feedbac...

I am seeking a skilled programmer who can create an intelligent BOT that's able to traverse my google spreadsheet and scrutinize incoming leads based on their EPC status. The main functionalities requir...simultaneously check their EPC statuses. - Highlighting Matches: In case a lead matches the EPC status I am in search for, the BOT should distinctly highlight the respective row in the spreadsheet. - Segregating Non-Matches: The BOT should be capable of moving the leads that do not match the desired EPC status to a separate section in the spreadsheet. Ideal skills for this job would be advanced Python or Java programming capabilities, extensive experience with google spreadsheets, and familiarity with EPC checks. A structured and methodical approach to problem-solving is ...

I need to create a small educational program for work related to PLC. OBJECTIVE: I need to do a job, where a program reads 3 numbers and sorts these 3 numbers in ascending or descending order, and checks which one has the highest value. The software to be used is OMRON's CX-Programmer. The controller would be Omron's CJ1M. This work is for educational purposes so it should be simple but well structured. The structure of the program should have some similarities with the attached images (ATTACHED IMAGES ARE AN EXAMPLE ONLY)! Please try to use simple or the more commun functions. As it is an educational program, it must be as simple as possible, but at the same time it must be well structured to presentation. Thanks IMPORTANT: The software to use is ...

I need a seasoned Java developer with a strong background in utilizing NetBeans 8.1 and Derby Database. The primary task would be to improve the performance of an existing Java application. Key Requirements: - Expertise in Java and NetBeans 8.1 is essential. - Familiarity with Derby Database and how to optimize its use. - Proven track record in enhancing application performance. - Ability to identify and address performance bottlenecks in the system. Performance Improvement: - The main area of improvement is managing data processing speed. - Analyze the application for possible performance improvements and suggest appropriate solutions. Please note, the client has not specified details about user interface responsiveness or server-side operations. Thus, the focus ...

I'm looking for an experienced coder in Java programming language for my institute who can teach students Java from basic to advance level. Key Requirements: - Proficiency in Java programming - Experience in developing software projects - Knowledge of coding practices and methodologies - Solid understanding and application of algorithm design Your role will be to teach students Java and make them proficient to build projects. This is going to be an offline projects in Nagpur, Maharashtra. Please include in your bid any relevant experience you have in developing software prototypes in Java.

I am in need of an experienced app developer to create an Android educational app with user acco...to make learning content engaging and interactive on a mobile platform. - User accounts are a key part of this project, as I want users to have personalized experiences and be able to track their progress. You should be able to design and implement a user account system with profiles and login functionalities. - Experience with Android app development is essential. You should be comfortable with Java and/or Kotlin, as well as the Android SDK. A good understanding of Material Design principles will be a big plus. Please provide examples of previous apps you've developed, especially if they are educational. Your ability to create a user-friendly interface and a smooth user experie...

Need some to program me a small function in this sdk to add RFID verification & then open gate for the user using following SDK.

NOTE : this is for futures .. max budget is $300 *** please submit, only if you have worked on BOT projects for crypto exchange*** I'm seeking a skilled developer to create an automated trading system that can...require seamless integration with the MEXC platform. Skills and Experience Required: - Strong knowledge of algorithmic trading and cryptocurrency markets - Proficiency in building automated trading systems, particularly on the MEXC platform - Experience in developing and implementing trading strategies - Understanding of real-time market data analysis - Proficiency in coding languages such as Python, Java, or C++ Please only apply if you have a proven track record in building similar systems and are able to deliver a reliable and effective trading bot for the MEXC ...

Hello, I'm looking for a programmer for my project. C++ and possibly Java experience. I have already programmed my idea as a demo version in HTML on my website, now I need someone to implement it as software. In the future, the whole thing will be programmed on a screen including a touch screen, so that we have a finished device including a screen and buttons. Since this is a prototype and I need more versions, a permanent collaboration would be possible. I look forward to your offers. Best regards

I'm seeking an experienced full stack Java developer to help enhance an existing application. This project requires a professional with a diverse skill set across front-end, back-end development, and database management. Key Responsibilities: - Enhance the application with new features and improvements - Optimize front-end elements for maximum speed and scalability - Design and implement secure, efficient, and scalable back-end solutions - Ensure the application's database is well-managed and optimized - Participate in the development of healthcare/business related applications. - Work with Product Owners and teams to drive features and specifications, architecture design, implementation, and other software development responsibilities. - Works closely with in-house UX te...

...Openswoole developer to create a live chat system with specific functionalities. The main aspects of this project include: - Real-time Communication: The core of this project is to develop a live chat system utilizing Openswoole to ensure seamless and real-time communication between users. - Platform Compatibility: The widget needs to be compatible with WordPress, Shopify, and Wix. - Easy Embedding: The widget should be easily embeddable on various websites to ensure a smooth integration process. - Customizable Design: I require the widget to be customizable. - Key Functionalities: The live chat feature should include file sharing and chat history. The ideal candidate for this project should have strong expertise in Openswoole, PHP, and live chat ...

I'm searching for a skilled development team...Live Betting: The website should offer live betting options. Users should be able to place bets while games are ongoing. - The live betting functionality should be seamless, with minimal lag, to ensure the best possible user experience. Ideal Skills and Experience: - Prior experience in developing betting websites is highly desirable. - Proficiency in relevant programming languages like Python, Java, or PHP. - Good understanding of web security practices and measures. - Experience in creating user-friendly interfaces for online platforms. Please note, the project does not currently require support for casino games or fantasy sports, though the flexibility to add these features in the future would be beneficial. Reference - D...

I'm seeking a skillful programmer to develop a comprehensive Data Encryption Standard program using Java. Key Project Details: - The program should strictly adhere to the Data Encryption Standard algorithm.

I'm looking for a developer experienced in pointer data structure , garbage collection, file allocation , pure C, and core C fundamentals. Your task will be to analyze and redefine the flow chart of our existing program. The program in question mainly focuses on file input and file type user interface design. However, as the details for improving are not specified, your fresh perspective is needed to suggest improvements beyond our focus. Expertise needed: - Proficiency in programming, along with C and core C basic. - Skill in evaluating and redesigning program flow charts. - Experience in user interface design is absolutely critical. - Ability to suggest elements for improvement and execution strategies. Get ready to dive deep into our code, streamline our ...

I'm looking to integrate a real-time chat feature between our CRM (Bitrix24) and Omnichannel (Huggy) platforms. Key details include: - The integration must be comprehensive, i.e., there should be no missing features or functionalities on either platform during or after integration. - Real-time synchronization is crucial. This means that chat data should be immediately accessible and updated in both systems without delay. Ideal candidates for this job should have prior experience in real-time chat integration, especially with CRM and Omnichannel platforms. They should be able to deliver quality work that guarantees seamless communication without any glitches or delays in the chat feature. I appreciate developers who pay attention to details, as every aspec...

I'm looking for a simple application where I'm going to use as a framework to grow functionalities on it. - It must be on React native (NOT expo) - java script code - Work in android initially (ios in the future) - Organized modular code (NFC calls, API calls etc) - You must provide instructions on how to create the dev environment - All code will be shared, without restrictions - It must have 3 screens - Login screen - which will authenticate to a backend I will provide - Then a main screen with 2 subscreens - Card read - read content of a NFC card - Configuration screen - to read/write some params from the API - And some other parameters like the URL to call, persisted locally on the phone Ideal Candidate: - Experienced in React Native developm...

In search of a skillful developer to create a real-time chat feature for a mobile application. The main functionality should include: - Real-time messaging capability There is no urgency in completion timeline, so we value quality over speed in delivery. Ideal candidates for this project should have prior experience in building chat features for mobile apps. Proficiency in real-time communications and knowledge of cloud messaging APIs will be valuable as well. Candidates who have a good understanding of latest trends in mobile chat interfaces will be preferred. Let's build a chat experience that truly engages users.

I have a document that requires clarification in content. The task involves refining and enhancing the existing content to make it more understandable and comprehensive. Your job will include: - Reviewing the document to identify areas that require clarification - Providing clear, concise and well-structured written comments on the document to guide the revision process. Ideal candidates for this project should possess: - Strong command of English, with keen attention to grammar and punctuation - Editing and proofreading skills - Experience in content writing and rephrasing - Ability to provide clear and constructive feedback.

I'm looking for a Java expert who can help me with some tasks related to Java programming. This includes Intellij and Maven. And you must have expertise on 'Java patterns' and 'Java swing' I will share more details over chat. Thanks!

You have to write a SEO optimised articles using ChatGPT4 only. Just mechanic work. For a one hour you can add about 5 articles. I pay 5 USD per 5 articles/day 1) Come up with a blog post title using ChatGPT4. (everything about crypto investment, cryptocurrency, blockchain, crypto learning, etc.) 2) When the title is chosen, write an SEO-optimized article using ChatGPT4. You can use this prompt for example: Write an SEO-optimized article: figure out the title with the key phrase {your article title} in at least 1500 words, add H1-H6 headings, and use the phrase {other article phrase} in the text. Also, add an FAQ with the answers at the end of the article. 3) Please do cross-linking, which means you should link one of our existing articles in the text. {other article phrase} 4) Feature...

I'm in need of a skilled developer to create a Java-based EPP interface for the IN Registry that will allow various domain functions to be carried out seamlessly. - **Domain Name Registration**: The interface should be capable of handling the registration process end-to-end. This includes: - The provision of a registration form that allows users to input necessary information for domain registration. - Implementation of a domain availability checker to ensure the desired domain is free for registration. - Enabling DNS management facilities to allow for efficient domain configuration. - **Domain Name Transfer**: The interface should facilitate smooth domain transfers. It should incorporate: - Mechanisms for generating and validating transfer authorization codes. - A ...