[popcalc]

I’ll admit it now: in the very early days of bird scooters they accepted visa and MasterCard test numbers. You could start rides and only after a week would they block your account. Of course, the only thing you needed back then to sign up was an email. If you had an android, you could just wipe the cache, enter a nonexistent email address off the top of your head, paste in a test card number and get going again. Fond memories.

[NoZebra120vClip]

I had a friend who carried around a canceled credit card to get free rides on the bus. The fare boxes accepted swipes and didn't/couldn't settle transactions until they were back in the barn. So they took any credit card that checksummed, I suppose.

They ceased this feature soon afterwards. I was appalled that they'd ever enabled it if it was so vulnerable. (I don't think public transit really cares about collecting fares as a priority.)

[felixg3]

In 2013, I did that to get a free luggage trolley at Chicago O’hare. Just swiped an old credit card for the dollar and it immediately unlocked.

[tempoponet]

This reads like a passage straight out of "Snow Crash".