During all this monitoring, I wasn’t anywhere near the rider. I didn’t even need to see them with my own eyes. Instead, I was sitting inside an apartment, following their movements through a feature on a Metropolitan Transportation Authority (MTA) website, which runs the New York City subway system.
This is why I always pickup someone's old card from the ground in a subway station and reload it with cash.
We need more metros that use paper mag swipe cards that cost less than a penny to produce, so they can be recycled anonymously in this way. RFID metro cards are cancer