[SanjayMehta]

This is just silly: how many people punch in their PIN number and then leave immediately?

I guess these researchers haven't ever withdrawn money from an ATM.

[wongarsu]

That's how pin pads on doors work: you punch in the PIN, then immediately go through the door. And those pin pads are somewhat popular in commercial settings because it's easier to distribute knowledge than to distribute physical keys.

[SanjayMehta]

I haven't seen a PIN pad lock in years in secure facilities, everyone uses contactless cards.

[dagw]

At work we have both for many doors. You have to scan your card and then enter your PIN. This way someone can't just steal a card.

[eequah9L]

From TFA:

  > 86% of passwords when thermal images are taken within 20 seconds, and 76% when within 30 seconds

I don't know how long you spend at the ATM, myself I suspect I would typically fit within the 20 second window.

[SanjayMehta]

Well, then all they'd get from me is 5000 - that's the amount what I punch in after the PIN for my typical cash withdrawal.