Several years ago, I've had an ATM crash and reboot after pressing one of the screen side buttons when the machine was waiting for PIN entry via the numeric pad

Several years ago, I've had an ATM crash and reboot after pressing one of the screen side buttons when the machine was waiting for PIN entry via the numeric pad. It rebooted, and I could see that it was running MSDOS, not even Windows. Luckily, after the reboot completed and the ATM frontend program started, it spit out my card again. With one of offices of my bank being nearby (to be able to block my card if I couldn't get it back), I tried it two more times, just to check that it wasn't a random occurrence. While it was probably nothing that could further be escalated into gaining access without additional hardware, it gave me a chuckle (and a bit of fear for my card, initially).