[timewasterthrow]

It wasnt their account. He had his own chargepoint account. But because its a public charge station, it shows history and its current use status. She was the only one that charged at work consistently at that charger, and had a more rare bolt instead of a tesla so her charge history was showing on a public charger.

It's 'technically' anonymous, unless you have a clue about who has what car and where they charge.

[MengerSponge]

Losing a single bit of entropy can be enough, if it's the correct bit

[zeroping]

Yep, and this is why protecting medical data is hard. This is a nice compact example of the same thing.