Did you build your current lock by hand? Did you at least disassemble it and figure out that there isn't a master key that would grant entry? How far do you tak

Did you build your current lock by hand? Did you at least disassemble it and figure out that there isn't a master key that would grant entry? How far do you take this? Maybe having your locks NAT out or phone home to a third party is a bit much for a lot of people, as it opens new vectors, but you know, bricks and windows and such.