The app is: [login to view URL]
Video Explanation/Demo: [login to view URL]
The app is probably calling an API. The app is sending the EAN code (the barcode number, 13 digits) and the API probably answer with the scanned product information.
The transaction problably involves token for info exchange.
Be able to use the api that uses the app from outside the app.
Be able to send barcodes and receive the info without using the app.
18 freelancers are bidding on average $283 for this job
I have relevant knowledge and experience for your project (API extracting/scraping data from sites). Look at my profile for details. I'd be glad to work with you. Feel free to write me if you have any questions