3
Custom ROMs have had just about enough of being Android's second-class citizens
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
the app hides the real numbers for the credit card and gives the POS a mock id to make the purchase. it's harder to clone. also you need to unlock the phone for it to work it's an extra layer of protection
Pretty sure all contactless forms of payment work like that
Giving a mock card sounds useful. I'd looked into that for paying online but I couldn't find an open source way to do it.