[chadgpt3]

He means the tracking potential is the same. Is the Oyster card anonymous?

[tkocmathla]

Yes, they can be anonymous in the sense that you can buy one in person and top it up without an ID [1].

[1] https://tfl.gov.uk/fares/ways-to-pay/where-to-buy-tickets-an...

[jolmg]

> He means the tracking potential is the same.

If you can buy and use with cash, then it isn't.