Rooting your Galaxy S6/edge will make Samsung Pay stop working
If you have a rooted device, though, the following message will be displayed when you try to use Samsung Pay: "locked due to unauthorized modification." Bummer.
It's not yet clear if unrooting the device will bring back the ability to pay with your Galaxy S6 or S6 edge, but this should become clear soon enough. Still, the fact that there are one-click solutions now which can root the handsets without tripping the KNOX counter, bodes well for the future of Samsung Pay on rooted devices.
source: SamMobile
Things that are NOT allowed: