h a l f b a k e r y
"It would work, if you can find alternatives to each of the steps involved in this process."
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And the mechanism is hidden. What I'm thinking of is a self-locking
medicine cabinet that can be accessed by twisting the toothbrush cup
on the counter.
The toothbrush cup doesn't look like it is the key, but when it is
twisted, it sends a signal to the cabinet. Maybe an RFID chip that is
screened until the twisting of the cup lifts the screen.
Magnetic Key Lock
Often used to secure cabinets where no visible hardware is desired, or when baby-proofing a home. [jurist, Jun 24 2010]
||Already baked in many instances.
||I like it. Leave off the last sentence, and stick with
your specific idea. (just a suggestion)
||Magnetically activated internal bolt locks or simple magnetic key cabinet latches might be an easy-to-retrofit low-tech way of implementing this concept. [link]
||I dearly love any idea that moves the world closer to
the time when science fiction meets fantasy. When
an action is apparently completely unrelated to the
result unless you already understand the underlying
technology, you're there. Examples include this idea,
doors with sensors that open when one approaches,
thermostats with timing mechanisms and sensors for
user presence, and fully automated floor cleaning