I have a Note Edge running Marshmallow. Are there any "tap to pay" apps other than Android Pay? I would like a tap to pay app that does not require a phone lock. Can't have a phone screen lock on my phone due to the way I use my phone when driving. I did a google search but couldn't find anything other than Android pay and Apple pay. Google Wallet appears to be for transferring money between accounts. Any suggestions? Thank you.