I'm an Aussie and use one of the big bank's apps on a s6 edge (the edge is weird and I hate it). Contactless payment already works great in exactly the way that a credit card does as a store terminal. Anyone know if Samsung gets a cut?
It's true that they provide security, but then again, other banks are happy to use other techniques (commbank's app does nfc payments on pretty much anything with NFC - nexus 5 included)