I was at sheng siong earlier and they have the apple logo stuck to the reader. But if not, just call it paywave or paypass and should do the trick. Paywave for visa and paypass for MasterCard. All use the same reader and as far as the cashier is concerned, they press the same button to activate the reader.
I was using the self pay machine at sheng siong and the reader was hidden behind so using my thumb on the home button and the phone flush to the reader was hard to achieve.
But I noticed something. When the phone is near the reader, the Apple Pay screen get activated on the phone, I just need to do the fingerprint id to unlock Apple Pay. Then just touch the phone against the reader. No need to keep doing the fingerprint thing once it is unlocked.
Will confirm with the next purchase.