Guests are sometimes able to scan QR codes via the app to initiate checkins. Currently, it is not possible to configure a redeemable that can be scanned by a guest's app that will gift them the redeemable. Likewise, there is no API available which can add a redeemable to a user's account by scanning a QR code.
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)