the.com/latches
The humble guardians that decide if a door is a suggestion or a promise.
means Mechanical fasteners that hold something shut by catching into a notch, lever, or strike, releasable on demand.
from From Old English laeccan, to grasp or seize — the latch literally seizes the door before it can wander.
Circuit cousinIn electronics, a latch grabs and holds one bit.
Not a lockLatches hold; locks secure — a critical difference.
Gate behaviorSlam-and-catch design needs no hands to engage.