keys
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Background: When an action is routine and uninteresting (e.g. locking a door, turning off a light, etc.), it’s sometimes hard to remember if you did it at all. The issue: Occasionally, people find themselves wondering “did I close the garage when I left the house?” or “did I remember to lock the car when I…
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Background: The humble door-locking deadbolt has suffered from a severe failure of innovation and imagination in the last 100 years. Specifically: most deadbolts have exactly two positions (Figure 1): Open (door can be opened from either side) Closed (door requires a key to open from the outside or a switch to be operated from the…

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