Dear community, I’m having trouble with the backend of my app. I’m developing a web app that generates unique receipts with QR codes for each type of purchase (beverages, alcohol, etc.). Each receipt must have an expiration date and time, be valid only once, and be able to be printed in 80mm. Service staff must scan the QR code to validate its use and type.
I’m currently OK with the front end. My problem is how to connect the database, QR generator, and scanner. I’m looking for advice or someone to help me get everything ready.
I appreciate your help! (IDEALLY SPEAK SPANISH)