[floren]

But when mass transit phases out paper tickets, "use the convenient app for a 20% discount!", it's not much better...

Even with paper tickets, if you paid with a credit card there's now a perfect record: Jim Smith got on at the Fruitvale station and got off in Fremont, stayed there two hours, and then came back the same way.

[dylan604]

the old trick at the air port was to buy mulitple tickets leaving around the same time to different destinations at multiple airports ultimately traveling under false ID under a different name. that's surely feasible for pretty much anybody not just super spies, right?

[getcrunk]

Not anymore ... With facial recognition and passport/I'd databases?