Love the simplicity of the app but I am not sure it properly handles all the security (fraud protection, account spoofing) issues around payments. Doing payments is hard for a reason!

I think the payment process should be included. Not sure how effective this will be if you have to separate the payment and the tip. This might be nice if you think of adding the ability to "open a tab".

- NFC TIpping

nice idea - i can definitely see some pubs and bars equipping folks with tags to get tips

Nice work for a one man team.