the.com/warded
a lock's way of saying you shall not pass, unless your key has the right bumps.
means a warded lock uses fixed metal obstructions inside to block any key whose shape does not match the correct cutouts.
from from old english weardian, to guard, the same root that gives us warden and ward off; the wards are literally the guarding ridges inside the lock.
security levelpickable by a bent paperclip in seconds
still everywherecommon in cheap padlocks and antique furniture
skeleton key origindesigned specifically to bypass multiple ward patterns
medieval rootsused in castle door locks for centuries