QR code
A QR code is a two-dimensional, machine-readable pattern containing data such as a web address. Its function depends on its contents and the application that reads it.
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What this means for your shop
A QR code can open a route to a page or identify a card. Google lists QR codes as a two-dimensional format and describes possible data contents in its barcode-scanning documentation. That covers the technology itself; the software behind a code decides what happens next.
Label each code by its purpose. “Get your card” describes a different step from “Show your card for a stamp”, and the square pattern alone cannot tell guests which is which. Test a printed code where it will actually stand and check that the expected page opens.
How to recognise it
During registration, a guest aims their camera at the counter code. On a later visit, they present their personal pass and your team’s camera reads its code. The scanning direction and the card involved have changed. A menu accessed through a QR code would be another use of the same technology.
With Treubar
The general code leads to card registration with a first name, surname and date of birth. A new QR registration creates a new, empty card, so on return visits guests simply show their saved pass.
The guides to printing the counter code and stamping a card explain both routines. NFC self-stamping at the optional stand is an additional route alongside the ordinary camera scan.