The baffling brain teaser, shared on Instagram’s Threads, asks people to ‘crack the password’ of a lock using a few hints. How quickly can you unlock it?

Imagine a number lock with a three-digit code, and you're given five clues to crack it open. First, one digit is in the correct spot. Second, one digit is right, but it's in the wrong place.

Previous reports have suggested the GrayKey can crack 4-digit passcodes in a matter of hours and 6-digit passcodes in days, but as highlighted by VICE 's Motherboard, cracking times for the ...