Transit gate tappers are endlessly fascinating to watch: feather touchers, slappers, pocket fumblers, precision marchers, schlep slumpers. The daily routine is never routine.
Apple Watch transit-gating has a different set of challenges compared to plastic transit cards and smartphones, and a different set of circumstances: left wrist vs right wrist, transit gate reader position and NFC antenna read sensitivity with the much smaller Apple Watch NFC device.
There is also the crucial wrist twist. Apple recommends a quick wrist twist so Apple Watch faces down to the reader for better NFC reception, best shown in the Apple Pay Octopus Ride and Buy video:
Twitter user S posted a fascinating take on the subject. S wears his Apple Watch Suica on the right and keeps it facing up on the reader, not down. Apple Watch Journal has a great video showing this in action. The Apple Watch face up trick works on JR East gates but not so well on PASMO gates. Why? JR East gate readers are manufactured by JREM. PASMO gates are a mix of Omron, Toshiba and Nippon Signal.
I notice PASMO gate difference with Apple Watch Suica, some gates work great face up, others not. When you use the same stations everyday you develop a natural sense of the best gates. The differences are tiny but noticeable if you pay attention. Even so I am not a face up Apple Watch Suica user, I go sideways and it works everywhere.