This lock definitely cant be picked conventionally!

[digital_blue]

^---

Every one of my neighbors, or any passerby lucky enough to be there as I come home, would know about it pretty quick, wouldn't they?

And it seems to me that if all that would be necessary to bypass my lock would be a discrete recording of the particular knock sequence, then a small device to duplicate that... well.. that wouldn't be very secure.

Unless these things work like a typical garage door opener, with a rolling code system. They might, and in that case, perhaps there's a reasonable amount of security in it.

db

EDIT: After closer inspection:

The fact that the “Knock Code” contains a pulse code of 16 digits and is comprised of a combination of different encrypted and random codes means that there are billions of possible code combinations which makes these locks extremely safe. The “Knock Code” also uses random generation of part of the code so it never uses the same exact code twice. This makes it impossible to imitate the KnocKey even by recording the code.

So that's not so bad, I guess.

[JackNco]

how do u encrypt a knock?

[Afisch]

The idea of having to type in passwords in rhythm seems a good idea to begin with, as i defiantely have a certain rhythm in the inputing of mine. However i think that this changes on a second attempt and trying to, "remember" this rhythm would be chalenging for a second attempt, or while stressed, tired etc. It is a good security measure but not one that would be widely used. As if your off rhythm you would be out for a long time.

[JackNco]

there was a similar idea tried here with signatures it not only had to match but had to be written in the same way. it quite simply didn't work.

[globallockytoo]

Wow! You guys really are good at asking and answering your own questions! (db)

[jedidove]

I think you might be missing one of the points here. The knocknlock has the great attribute of being a lock with no visible keyhole...therefore how do you know what is locking the door?

No sign of a mechanism on the outside means there is no way you can tell or devise a method of NDE from the outside. Unless you have X-ray vision....then they'll start building doors with lead shielding.

Understood but how many other types of locks leave the face of the door blank. Maybe I'm wrong but I don't think there are any. If I saw a door without a lock my first guess would be this thing.

Of course db's point holds true as well

Now if you want to use this in addition to a physical lock that would be clever. Then you'll be sure to stump anyone who can pick locks. Then again, unless you pissed in Jason Bourne's coffee or ticked off some three letter agency, your better off skipping the KnockMatic 7000 and investing in stronger windows

[TOWCH]

Bulky key.

The blackbag blog had a comment covering a problem with rolling code systems:

http://www.toool.nl/blackbag/?p=38

Transciever=piezo buzzer/contact microphone.

Would the average person notice an extra long buzz the second time around? Maybe not? I don't know.

[Raccoon]

I just want to see a mansion with doors that have absolutely no handle or keyhole, just a knocker. Visitors would knock (any knock) and the device would wait 3 seconds, then release the electric/magnet latch causing the door to creak open slightly. Another device inside the entry way would detect the person cleared the door, and electricly or mechanically shut it behind them.

Note: You can store the energy exerted by the visitor opening the door, and use it for shutting the door.

[globallockytoo]

there are many types of locks that lock only from the inside. Ones that have keyholes too, like lockable patio bolts, they are quite common all over the world.

You also might want to consider locks that operate via remote control. They are becoming more common lately too.

What about magnetic locks...often they will be fitted to an exit door without other locks....they can be operated with a swipe card, proxy reader or even a keypad....sometimes fitted to the jamb or wall beside the door (no visible keyhole). How would you know whether or not one of those products may be fitted?

This device is but one new product that can offer the advantage of securing an entrance without the need for an external keyhole. There are multiple applications for this product I believe.

[HeadHunterCEO]

Raccoon i will help you secure your knock lock
you will have to add an additional door and hallway though in front of your intended door .

the first door/opening will have to be STC rated as will the entire hallway.
that way when you are entering your "code" you will not be heard.

[jedidove]

I am under the impression that this is meant for house locks and I am discussing its security as such. That being said there must be a means of locking the door externally (unless the owner is an idiot). If it is a slide card, keypad, etc. there will be a visible sign ie: card slot, keypad, etc.

All I am saying is that I think if this were to become popular someone would probably figure out a bypass or decoding method that would be faster and easier for a thief than picking an equally priced physical lock.

In today's world I feel like people are more interested in and more likely to exploit electronic security than they are physical security. Basically: malicious hacker population > malicious lockpicker population.

To each his own.

[globallockytoo]

If you read some of the technical specs on the product you will understand that this product comes with a time delay mechanism that holds the lock open for 3-5 seconds before relocking.

The unit comes with a proprietary locking mechanism altho I'm sure it could work with a mag lock if you made a sensor for it.

Undoubtedly, someone will devise a method for defeating the product...eventually.

Until then, I believe this product could prove a decisive thorn for would be burglars.

[mh]

personally, I would be more concerned that this lock also opens to a universal knock sequence -- --- ... ... .- -..

Disclaimer: sorry, could not resist... this is meant as a harmless joke and not intended to offend anyone...

[JackNco]

....What the hell is MOSSAZ?

[mh]

....What the hell is MOSSAZ?

don't know, but -.. is a 'D'
(cf. http://en.wikipedia.org/wiki/Morse_code)