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[1] [2] Dumas previously worked to develop SmartScan, fingerprint-reading residential deadbolt lock which Dumas described as too unreliable. He started UniKey to sell locks which use smartphone technology to open locks instead of physical keys. [1] [2] [3] In May 2012 Dumas and UniKey Technologies appeared on ABC's reality series Shark Tank. [4]
Some lock manufacturers also have a "lockable" knob: a key is always needed on one side (usually external), and a twist knob can be used on the other (internal), unless a button has been pressed, in which case a key is also needed on the internal side. [3] A variant of the standard deadbolt is the vertical deadbolt, invented by Samuel Segal.
The lock is not visibly damaged, although the force of the bump can leave an indentation on the front of the cylinder. Certain clicking and vibrating tools designed for bumping can also be used. These allow for rapid repetition of bumping. Though some locks have advertised "bump proof" features, only a rare few key-pin locks cannot be bumped.
Historically, such locks were intended for use at night-time, hence the name. [5] The keyless egress that they offer is a valuable fire safety measure, but may be a security risk if breaking a glass panel (usually in the door) or a nearby small window allows an intruder to reach the knob inside and open the door from the outside.
The door could also be locked or unlocked via an SMS "key" for those without smartphones. [5] All models of Lockitron allowed for a traditional lock which continues to work with traditional metal keys. [6] When a metal key was used, some models of Lockitron sent a notification to a smartphone. [7] Lockitron was notable for offering an open, web ...
Think of your account password and the verification code as working together, similar to a doorknob lock and a deadbolt. If you unlock the doorknob but not the deadbolt, you can't get inside.
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