This is what the display at the self-service checkout at Bauhaus looked like earlier today. The upper blue line is probably for Visa Debit, and the lower one is for VPAY. This is only for contact chip transactions in the chip reader, not NFC.
To move to the next step in the transaction, you touch/select one of the blue lines, and the transaction moves to the next step. Most Ingenico devices with the transparent NFC antenna will be like this. In this type of case case, there should be no difference to you or the merchant which one you choose.
As I have more examples I’ll post them here - if you’re not expecting this kind of customer choice, you might not know what to do next.
