@Tinker_OwO if you meant to scan a QR-code for payment through an app by tapping your phone to the EDC machine (without opening your phone camera), yes we can do that, some payment apps already activate the QRTap feature, but it will only works if your phone has an NFC feature. I believe an NFC feature were started to exist on Android 12 to 14, but still, not every phone have an NFC feature in it.
@athayanezant what OS are you using to not have any home buttons? if you meant physical home buttons, they are now integrated with the screen and depending on the settings could be a pop up on the bottom of your screen