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Which type of locking system uses a dial that must be turned clockwise and counter-clockwise in order to open the device?
Pushbutton locks
Smart locks
Keypad
Combination locks
The correct answer is a combination lock. A combination locks use numbered tumblers and dials that must be turn clockwise and counter-clockwise to preset numbers in order to open the device. The main vulnerability of the system is when the combination is written down or is not changed frequently.
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