Doesn't work Gives me a message about how "your card's contactless feature is inactive" which isn't true because I have used tap in many different places, including other apps that work properly.
Doesn't work on Nexus 6P: invalid app information provided. Please double check your appId, accessKey and other identification info? WTF? show on startup (splash screen) and then nothing happened.
Used to work Worked for a while now reports invalid id. Reinstalled no difference.
Works perfectly with a tested Visa card. Was a little concerned about security initially but the permissions don't seem to be outlandish. There's a button, pre-filled with your email address on the Scan screen to be sent the SDK. This is about the limit of anything in the way of ads so seems all OK to me.
Doesn't start. Rooted user.
Experimental support for ApplePay