Making an unpickable Lock

[Chucklz]

6/32 = 3/16? Varjeal, did you mean 5/32 ?

[Varjeal]

oops...that should've read 6-32...Big difference.

[lordofbaal]

This is probably moving away from an unpickable 'mechanical' lock but what about a lock system with some kind of biometric integration?

A biometric system (to my knowledge) is unpickable and resists attacks from physical manipulation to 'spoof' type attacks which try to fool the unit into believing that you are an authorised user.

I am by no way an expert on biometrics! I am just very, very interested!

[Chucklz]

Various fingerprint readers are very very easy to spoof. Not going ot comment on how, simply that it can be done easily. Like picking a kwikset easy.

[ReverseLogic]

sort of off topic, but I think that the "perfect" lock is one that when a would-be theif would look at it, his first reaction would be to try another link in the security chain, I.E. chopping through the door, entering through a window, etc. I don't think that any any thief is going to have the time to sit and pick a medeco or a some other high security device. Chances are they are going to drill it or find some other means to bypass it. This is why, IMHO, the final answer in security is people. If it takes about a half hour to pick/drill/bypass a lock, there should be someone there about every twenty minutes or so to check on it. ANd this is the same way with low-security locks as well. Lets look at those Kryptonite U-locks. Great idea (asside from the fact that 1 in 20 is keyed alike:roll:) Obviously you could use an anglegrinder or cutting torch on it, but the only place you should use this is where there is decently high foot traffic where any thief would not get a chance to use these tools without being seen. Well, that's enough from my OT thought, talk to you people later.

-RL

[technik]

nah, thats a very valid point RL

[scientist]

That was actually the point I was trying to make:a lock becomes unpickable if it is no longer the lowest level of security on the chain.

For instance, the gas company here uses spring-driven barrl locks(the key pulls a little plug inside, and that releases a ball which allows the end plug to come off...look up barrel locks, there is a subject on this forum someplace). Now, I can take an angle grinder to them:I have to see the innards. But with hardened steel, its easier to pay for gas

Im more into it for the *challenge* of doing it

-sCi

[HeadHunterCEO]

I got one for you

this would stop 99% of lockpickers cold in there tracks.

because its primary defense is not of moving parts or screwy pin designs.

take a regular kwik 440 singl/dead and pull the plug out of it.

with a fine blade on a jig saw or chop saw cut the plug into three pieces inbetween the cuts every 2 and then reassemble the lock.

applying tension to the cylinder would only be applying tension to the first two pins because they are now independent to the rest of the plug.

see the locks primary defense would be deception because lets face it a smart monkey could be trained to pick locks.

something like this most people would be stumbed by.

on second thought a schlage with some spool drivers thrown in would really make it interesting

[technik]

haha, thats clever. Easy, but effective. Nice work Headhunter

[HeadHunterCEO]

haha, thats clever. Easy, but effective. Nice work Headhunter

its got a flaw thought as you picked sections of the lock you could pull them right out of the face of the lock because they are esentially seperated from the tail piece

i guess if you places a small set screw in the side of the first section and carved a corresponding groove inside the ousing for the first secion you could keep the first section from coming out the front.

i think i will build this and give it to the guys at the shop!

[Chucklz]

And, of course, after you've picked the front section, and rotate it, a good picker should be able to figure out whats going on. Then you just need a long tension tool. Definately an interesting concept though.

But, about cutting the plug, I see a small issue here. When you cut the plug, you are removing a little bit of the space between the pin chambers. Unless you shim this space, your last few pin chambers will have significant alignment issues.

[HeadHunterCEO]

And, of course, after you've picked the front section, and rotate it, a good picker should be able to figure out whats going on. Then you just need a long tension tool. Definately an interesting concept though.

But, about cutting the plug, I see a small issue here. When you cut the plug, you are removing a little bit of the space between the pin chambers. Unless you shim this space, your last few pin chambers will have significant alignment issues.

ad some plastic washers of the correct i.d /o.d

[Chucklz]

Problem solved. I was thinkng of some feeler gague stock etc. But, anything that would work.

[ReverseLogic]

Nice idea head hunter. More creative than I could be. The only problem I can see coming into play is the fact that once knowledge spreads about this lock design, people would begin to realize that the only have to pick the last section of the lock, as that's where the bolting mechanism is attached to the locking mechanism. It's still a good idea though, especially if you want to pull pranks on a couple of your picking buddies

[Chucklz]

Everyone,

Wow, I must say, that as a board, we were able to take a good idea and really run with it. We were able to identify and quickly resolve minor issues. We've done this before, and I'm certain we will do it again. Sit back, and congratulate yourselves.