eLapin

Ride NY subway without swiping card
紐約捷運的”悠遊卡”

Finally, we might have RFID card/bar in substitution for Metro card.

Actually, it is a credit card but you can store money there and get some benefit within trial

Because of trial, there is only one gate with paypass sensor in one station. You better know where it is due to complicated entry of NY metro stations.

Unfortunately, not much lines adopt paypass system right now.