4 ms·

presumably the QR code is just an ID and the actual counting is done on a server, so there's not much room for "replacement" qr codes

• out_of_protocol 2y ago
  It could be an ID in the central database, or jwt-style signed token. More crypto-punk stuff ;) (not related to cryptocurrency). "Valid bottle" sounds funny
  • ortusdux 2y ago
    Reminds me of the RFID tags used to limit refills - https://www.validfill.com/solutions#overview https://www.validfill.com/solutions#overview
  • wlesieutre 2y ago
    Unique codes will finally allow the implementation of "drink verification can to continue" with validation that the user hasn't reused a previously scanned can