Recently moved to a gym that uses padlocks for locking your stuff, they sell them too for an inflated price of 3.5$, jokingly I tried my key on a friend’s lock, and one more random one, of course it didn’t work and it made me curious.
My question is how do factories make all keys/locks different even at these cheap mass produced kinds that are probably sold for 0.5-2$, how is it worth for a factory to “use different patterns” at that price, or how do they do it?
In: Engineering
They aren’t.
When MasterLock makes a new padlock, there are only maybe 200 different keys for that padlock that they make. Enough that it makes it unlikely someone would just so happen to have the same key as you, but it’s not impossible.
Same thing goes for car keys too, tho with the advent of more digital cars that makes it more complex.
But back when those keys were nothing other than a remote control, it was possible to find another car of your make and model that you could unlock with your key.
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