NYC is finally going to get something similar to what TfL has:
https://www.nytimes.com/2017/10/23/n...-new-york.html
The most obvious difference will be what passengers do to go through a subway turnstile or board a bus: wave or tap a smartphone or a credit or debit card, instead of swipe a MetroCard.
The system will work through apps like Apple Pay, Android Pay and Samsung Pay as well as “contactless cards” — credit or debit cards with embedded chips that rely on a wireless technology known as near field communication, or N.F.C.