Mistborn Allomantic Lock

A floor safe in Gave Entrone's private study, hidden under a couch in his rooms at the mayor's mansion. Its mechanism has no keyhole or combination; instead a series of internal pins must be nudged in sequence by Steelpushing and Ironpulling. Wax works out that the third pin requires a Pull, meaning the safe is built to be opened only by a Mistborn — or by someone using Hemalurgy to fake the same combination of powers. MB2:TLM:Ch 41