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A Wordlock letter combination lock.. A combination lock is a type of locking device in which a sequence of symbols, usually numbers, is used to open the lock. The sequence may be entered using a single rotating dial which interacts with several discs or cams, by using a set of several rotating discs with inscribed symbols which directly interact with the locking mechanism, or through an ...
Modern time delay combination locks can have many functions such as multiple different codes, pre-set time lock settings (open and close times), pre-set vacation times (e.g. Christmas Day), dual code facility, and a full audit trail providing a detailed record of the lock history showing who opened the lock, when and how long it was open. [3] [4]
combination puzzles like Peg solitaire; construction puzzles such as stick puzzles; disentanglement puzzles, folding puzzles; jigsaw puzzles. Puzz 3D is a three-dimensional variant of this type. lock puzzles; A puzzle box can be used to hide something — jewelry, for instance. sliding puzzles (also called sliding tile puzzles) such as the 15 ...
A combination puzzle, also known as a sequential move puzzle, is a puzzle which consists of a set of pieces which can be manipulated into different combinations by a group of operations. Many such puzzles are mechanical puzzles of polyhedral shape , consisting of multiple layers of pieces along each axis which can rotate independently of each ...
Crossword puzzle; Cryptic crossword; Cryptogram; Maze. Back from the klondike; Ball-in-a-maze puzzle; Mechanical puzzle. Ball-in-a-maze puzzle; Burr puzzle; Word puzzle. Acrostic; Daughter in the box; Disentanglement puzzle; Edge-matching puzzle; Egg of Columbus; Eight queens puzzle; Einstein's Puzzle; Eternity puzzle; Fifteen puzzle; Fox ...
These locks are often compromised through power analysis attacks. [12] [13] Several tools exist that can automatically retrieve or reset the combination of an electronic lock; notably, the Little Black Box [14] and Phoenix. Tools like these are often connected to wires in the lock that can be accessed without causing damage to the lock or ...
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Keys for some types of warded locks often have a characteristic symmetrical shape. The one on the right is a skeleton key. A warded lock (also called a ward lock) is a type of lock that uses a set of obstructions, or wards, to prevent the lock from opening unless the correct key is inserted. The correct key has notches or slots corresponding to ...