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  1. #1
    thompsonpost
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    Would you trust this product?

    I have no dog in this race, so this is not promotion, just an interesting device.
    Secret Knock Detecting Lock

  2. #2
    long time visiter Alfster's Avatar
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    Actually that's a pretty cool device. You'd have a hard time keeping the knock pattern secret from your neighbor's though. I could see that device being useful in other locking applications.

  3. #3
    Senior Member travelmama's Avatar
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    Interesting device but many strangers who come to ones door will use that knock to be cute and end up letting themselves in when no one is around.
    Two Wheels One Love

  4. #4
    Mystery Meat gitarzan's Avatar
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    Next year this time, you'll be able to buy it for not $49, not $39 but $29! But wait, there's more. Call within the next 10 minutes and we'll send you two, for the price of one. And the first 100 callers will receive, free, a gargoyle door knocker.

    Quote Originally Posted by Jseis View Post
    Is a ukulele player in a mandolin town and banned from all bars by the chief of police unless he leaves his strings and gravy at the front door.

  5. #5
    Blocking your fire exits coffeecake's Avatar
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    It would be good for an isolated area, where many people or a certain group would need to get in and might not have a key (emergency shelter, storage unit).
    Most people are other people. Their thoughts are someone else's opinions, their lives a mimicry, their passions a quotation.
    ~ Oscar Wilde

  6. #6
    Look! My Spine! RubenX's Avatar
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    It is an awesome microcontroller project... but my home's entrance is better off with a key.

  7. #7
    moving target c0urt's Avatar
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    Quote Originally Posted by RubenX View Post
    It is an awesome microcontroller project... but my home's entrance is better off with a key.
    simple is best sometimes
    how to tape your bars http://www.flickr.com/photos/89572419@N00/sets/72157629279270681/

  8. #8
    Bike Commuter MrRamonG's Avatar
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    Thats pretty dang cool.
    Orange County CA
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    May the wind be with you.

  9. #9
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    hows that work anyway?

  10. #10
    Gears? CliftonGK1's Avatar
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    What happens if the battery goes dead while you're gone? Do you still have a key to override it?
    "I feel like my world was classier before I found cyclocross."
    - Mandi M.

  11. #11
    Senior Member Michigander's Avatar
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    Quote Originally Posted by CliftonGK1 View Post
    What happens if the battery goes dead while you're gone? Do you still have a key to override it?
    Bring back the Sig Test!


    (\__/)
    (='.'=)
    (")_(")

  12. #12
    thompsonpost
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    Quote Originally Posted by goldfishin View Post
    hows that work anyway?
    Batteries and stuff. (Is it ok to use punctuation and upper case letters in this thread?)

  13. #13
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    Quote Originally Posted by CliftonGK1 View Post
    What happens if the battery goes dead while you're gone? Do you still have a key to override it?
    I see safe locks get around this by two methods:

    1: Key override. Bad thing is that unless the lock is a high security lock (and I'm meaning high security, not the cheap wafer tumblers used in file cabinet locks), then this will be the weakest point. Recommendation: A lock like the Mul-T-Lock Cliq or the Abloy PROTEC/Cliq. Both combine top of the heap pick resistance with an electronic part of a key.

    2: A set of contacts on the outside of the lock that one can touch a 9 volt battery to as a way to open the lock if there are no batteries. I have seen some safe locks that have conductive rings around the open/denied LEDs just for this exact reason. Only bad thing is that a vandal can zap the lock with 120VAC real easily.

    Me, if I made a lock that responded to taps, I'd include a high security key override.

  14. #14
    Senior Member KiuBWhy's Avatar
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    This is indeed pretty cool.

    I would use it in party contexts, other than that it seems like it could be a pain in the ass and the "secret" knock sequence could easily be identified by neighbors.
    Quote Originally Posted by x136 View Post
    So Nair will melt my fingernails off so I don't have to cut 'em? Sweet!

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