1. I remember seeing a similar commercial product. Everything was mounted within a door so it could not be tampered with. the "knock code" was so long and precise it used a small battery powered key to do the knocking.

Posted at 3:45PM on Jun 11th 2007 by pretorious

2. this seems like a good candidate for using one of those piezo sensors glued to the door.

Posted at 5:12PM on Jun 11th 2007 by ex-parrot

3. This would be awesome fun to hack, if some how indicates a mistake you could keep trying, well it would be very hard but none the less fun.

Posted at 5:14PM on Jun 11th 2007 by wolfmankurd

4. Port Knocking comes full circle!

Posted at 6:22PM on Jun 11th 2007 by EdZ

5. I'm working on (Read: About to start, anytime now :P) a similar setup, but it takes a picture with a webcam through the peephole of whoever knocked. An answering machine, but for your door.

Posted at 7:12PM on Jun 11th 2007 by WaffleMatt

6. I'm waiting for someone to make one that uses a webcam to detect shadow puppets through the peep hole as a access control method :P

Posted at 8:45PM on Jun 11th 2007 by _Vyper

7. Cool design might leeve you a bit open to break ins tho

Posted at 5:24AM on Jun 12th 2007 by Martin

8. Damn..... I just stumbled over this and thought Id submit it but it looks like I was beaten to it! oh well... it was a cool idea.

Posted at 6:48AM on Jun 12th 2007 by thip

9. Well, it looks unsafe, but it's like the apartment entrydoor opener connected to your doorbell, if you won't know it's there, no one will brute-force knock you!
and because it's a empty building, your neighbors won't get tired from your knock-sequence, so they won't give it a try someday..
nice hack!

Posted at 7:02AM on Jun 12th 2007 by matthijs

10. very nice. maybe piezzo would be a bit more appropriate for mounting/gluing onto a dor.

Posted at 4:09AM on Jun 13th 2007 by muris

11. Another interesting idea for this would be using a few hall-effect detectors set in several spots on the inside of the door. To open the door you just put a small neodym magnet close to where you know the detectors are, then the door pops open.

Posted at 2:29PM on Jun 15th 2007 by Jack

12. I'd like to try this with a capacitance switch on a doorknob. Or weirder yet, a musical lock with a door embedded theramin.

Posted at 12:06AM on Jun 21st 2007 by Forrest

13. Would be nice to have one where you'd have to sing a song every time you want to get the door open.
(imagine a scene where you'd have to go to the toilet)

Posted at 11:46AM on Jun 25th 2007 by zotkop

14. hi
asl plz please give me idea of haking a webside now plz ok

Posted at 4:40AM on Sep 5th 2007 by jamshaid iqbal

15. http://www.hackaday.com/category/cellphones-hacks/

Posted at 2:22AM on Sep 7th 2007 by sk