Editing Lock and key (section)

===With physical keys===
<gallery mode="packed" heights="150px" class="center">
Pin tumbler no key.svg|Pin tumbler lock: without a key in the lock, the driver pins (blue) are pushed downwards, preventing the plug (yellow) from rotating.
Disc tumbler locked.png|Wafer tumbler lock: without a key in the lock, the wafers (red) are pushed down by springs. The wafers nestle into a groove in the lower part of the outer cylinder (green) preventing the plug (yellow) from rotating.
Tubular locked.png|Tubular lock: the key pins (red) and driver pins (blue) are pushed towards the front of the lock, preventing the plug (yellow) from rotating. The tubular key has several half-cylinder indentations which align with the pins.
</gallery>
A [[warded lock]] uses a set of obstructions, or wards, to prevent the lock from opening unless the correct key is inserted. The key has notches or slots that correspond to the obstructions in the lock, allowing it to rotate freely inside the lock. Warded locks are typically reserved for low-security applications as a well-designed [[skeleton key]] can successfully open a wide variety of warded locks.

The [[pin tumbler lock]] uses a set of pins to prevent the lock from opening unless the correct key is inserted. The key has a series of grooves on either side of the key's blade that limit the type of lock the key can slide into. As the key slides into the lock, the horizontal grooves on the blade align with the [[Warded lock|wards]] in the [[Keyhole|keyway]] allowing or denying entry to the [[Cylinder (geometry)|cylinder]]. A series of pointed teeth and notches on the blade, called [[Bitting (key)|bitting]]s, then allow [[Pin tumbler lock|pins]] to move up and down until they are in line with the [[Shear line (locksmithing)|shear line]] of the inner and outer cylinder, allowing the cylinder or [[Cam (mechanism)|cam]] to rotate freely and the lock to open. An additional pin called the master pin is present between the key and driver pins in locks that accept master keys, to allow the plug to rotate at multiple pin elevations.

A [[wafer tumbler lock]] is similar to the pin tumbler lock and works on a similar principle. However, unlike the pin lock (where each pin consists of two or more pieces) each wafer is a single piece. The wafer tumbler lock is often incorrectly referred to as a disc tumbler lock, which uses an entirely different mechanism. The wafer lock is relatively inexpensive to produce and is often used in automobiles and cabinetry.

The [[disc tumbler lock]] or [[Abloy]] lock is composed of slotted rotating detainer discs.

The [[lever tumbler lock]] uses a set of levers to prevent the bolt from moving in the lock. In its simplest form, lifting the tumbler above a certain height will allow the bolt to slide past. Lever locks are commonly [[Mortise lock|recessed]] inside wooden doors or on some older forms of padlocks, including fire brigade padlocks.

A [[magnetic keyed lock]] is a locking mechanism whereby the key utilizes magnets as part of the locking and unlocking mechanism. A magnetic key would use from one to many small magnets oriented so that the North and South poles would equate to a combination to push or pull the lock's internal tumblers thus releasing the lock.