Gear sport: nfc chip at top left if the screen is facing you, which is at 11 o clock.
Gear s3: nfc chip at top left 11 o clock and mst at bottom right, 5 o clock.
Apple watch: the whole screen is the antenna surface cos it's a ring of antennas housing cellular/Bluetooth/wifi/nfc. The area of antenna is the dark border around the lcd screen.
So if you ask me, gear devices can scan at 12 o clock or face down. Whereas Apple watch can only scan face down.
Apple watch much more obvious how to tap.....because antenna ring...
Samsung Gear not very clear still......and it's a small chip....my first initial usage is face down( for normal payment)......end up very very very slow....probably due to bad position.
12 o clock position much better almost instantaneous, but also error quite often......
11 o clock .....vertical.....hmmmm....thats the position, i switch reader when the first 1, 12 o clock horizontal position not responding......and got most success with mobile ABT trial.....
if indeed is 11 o clock position, then people who wear Gear on left hand would have a lot problem
hmmm....will trial with the 11 o clock position....thanks for the tips