How do I securely and successfully collect payments with the QR code sticker?

Once the customer has made their payment via the TWINT app, have them show you the confirmation screen on their smartphone. Please look out for the following security elements:

The confirmation screens can change from one app to the next. The elements shown in the image are, however, identical in every app. 

Otherwise, you can check all transactions in the merchant portal at any time.

The simplest, quickest and most secure method of checking incoming payments is by having the push notifications from the TWINT Business Portal app sent to your smartphone or smartwatch. This way, you can react immediately if a payment is not credited to your TWINT account. Alternatively, you can set up e-mail notifications.