I know a locksmith who creates trap locks to recover lost or stolen master keys , the perpetrator with the missing master tries to nose around in a locked storage room , key is recovered and no need to re-key the entire facility

Next video: "How do you open your door when a key is stuck in the lock"

59 downvotes? I didn't realise Marty was such a common name.

100% total coincidence that you have those EXACT pins off screen. I love that sense of humor. Am I able to subscribe a second time?

I wish I knew this trick when my friend got divorced. It would have been priceless to see her struggling to get the key back out after dropping by to loot the place for a second time.

This is genius. >setup entry with 2 door entry, same key for both doors, outer door slams and shuts on its own (no problem - you have a key with you for that reason) >outer lock is not a key-trap >inner door traps key >perp literally caught in a lock

I used to think that LPL spoke with such succinct clarity because of the nature of an attorney’s work. It’s dawned on me today that the words chosen and the style of speech are selected because they are like the ridges and furrows of a key, allowing the entry of ideas with little effort.

Can you rekey so that it not only traps the key, but also the person turning the key ?

That's a great way to recover the keys in a non-confrontational way. I also really like that you've prepared everything in advance and that you've got some humour about it! And finally, your voice is so soothing for listening to.

Trapping the key would also stop them from picking it.

..This is one of the few videos which has high educational value. Liked and faved.

You could also have this for a key where the new cut is lower than the old cut. This by having a T master wafer instead. So when the new key is inserted, both the key pin and T pin will be in the core, and the driver pin will be in bible (no trapping). When the old key is inserted, both T-pin and driver will be in bible, and thus trap the core. Same also works for mixed keys. For those locations where the new cut is shallower than the old cut, you put the T pin as driver, and normal masterwafer. And for those locations where the new cut is deeper than the old cut, you put the T pin as mw, and then a normal driver.

Nice lateral thinking from Tom, well explained and implemented by you.Good to see you're continuing to expand your range (covering security and its flaws in many ways), especially in such a positive direction. It's not just ex partners who have those keys, it's disaffected ex-employees, ex-tenants, dog sitters and many more,. The inconvenience of dealing with a lock jammed by a trapped key must be outweighed by the "gotcha!" factor:)

Cool idea, although you’re going to have some fun getting into your house if there’s a key stuck in the lock :D

This is the first time I have seen you pin a lock 🔒 😀😁

your channel is awesome. I really never considered Lock Smithing to be much more than someone who comes when you're locked out of a car or a home. Or even a professional who cuts your copy keys and if you had the money comes to replace locks on doors. But now i see, you have enlightened me. There is so much more. So much so, in fact, that if i ever had the cash flow, i would definitely hire a professional like yourself to handle all my locks, every single one of them on whatever i had locks upon. This trap set is amazing, you would have helped recover the culprits key copy while assuring the person could not gain access so easily. And you would have help to prove (fingerprints on key in door) that a subject maybe made unlawful attempted break-in, maybe by a stay away order or a criminal trespass in an eviction. Its just mind opening. A locksmith unlocking the secret life of locks, thanks LockPickingLawyer. If i ever get rich i am going to hire you as my lock expert!

I love these kinds of videos! You make it all seem so clear. I hope you and Marty are on better terms by now ;)

Have you ever tried to pick a Bramah lock? Bramah are the oldest lock company here in London (probably one of the oldest lock companies in the world). Their original 'challenge lock' was actually first defeated by an American over 200 years ago! The modern Bramah locks are still based on the original concept and they are fantastically well engineered locks. I'd love to see you attempt one.

Please make a video on how to fix this once you have a key stuck in it!

Interesting solution. I've never played with T(security) pins. I thought you were talking about Top-pins up until you displayed them. Neat trick. Not only does it trap the old key, but also does not unlock the door. :)

If one were to grind the construction holes into slots or ramps, would it be practical to make the lock so that one of the keys could only turn it in one direction while the other could turn it both ways? Such a thing might also be good for a challenge lock, since picking to the wrong shear line would give a very deep false set but not an open (since the lock would turn to the position of the construction holes but then get stuck there).

Neat concept and excellent explanation, very linear. This can be simplified by re-pnning only the most vulnerable pin.

I very much like the way you think. This video and the one that shows how to make a lock jam when picked are my current two favorite videos of yours. Both videos make nice use of the construction holes.

Great idea! Can't believe there are no commercial implementations of this idea.

This is a neat trick. Can you post a video showing how to disassemble a lock from inside when this has happened? Thanks!!

Im re-keying my apt now and this was what needed. Thanks!

Old Marty-Busted!

Loved this one. Interesting to see this process. Thanks.

Very cool idea LPP, I'm loving these videos that people can apply to their own properties and make them more secure.

Great Tutorial

Marty just wants his Xbox

It's about your kids Marty!

Gonna have to have a word of prayer with Marty!

Comes home and sees Marty's key stuck in the lock Smiles at camera Oh, Marty!

I have some Kwikset plugs that do have construction keying holes on both sides. Also, newer Abus 83 cores have a construction hole on the plug. Very cool video 👍

You’re the best locksmith

Great video. Thanks

Very nice technique!

Forgot to add, love the videos keep them coming I learn so much from them every time.

This is genius. Thank you.

am i the only one who is impressed with his memory (if he didnt learn the cuts of the keys beforehand).

This video is AMAZING.

Pretty slick. That's some bad hat Harry.

And you get the key back. I love it

I can usually follow your videos easily. But this one used so many items, that I have only passing familiarity with

Cool trick. Thanks for the information.

That was awesome!! I would love to see more pinning please and thank you!

You make it look easy.

Tough luck for old Marty 😁

@6:53 Thank you for pointing that out, I'm new to this hobby and that was my very first thought.

Dammit, Marty! This is JUST like you. Classic Marty behavior...

Thanks for the acknowledgement and I'm glad I inspired you to work it out yourself. Your method is easier than mine where I modified the cylinder. Although I'm not sure they had T-pins when I did this in the early 90's. Now, with that said, it had me thinking of an easier way to remove the trapped key (especially if it's your only door). This is what I came up with, but it does require modifying the cylinder. And also require a little trial & error. 1. Find a small ball bearing that will fit into the construction keyholes. Measure the depth of the hole with the ball bearing in it. 2. Drill a very small hole (diameter of the above measurement) to the right side of the keyway that lines up with the bottom of the construction keyholes. 3. Place the ball bearings into each construction keyhole. 4. Now a thin rod inserted into the new hole (may need to be tapered) should push the T-pins up to the shear line, allowing the key to rotate. Now, this would also allow someone with the wrong key to still enter, but they would have to know what that little hole was for and have the right tool. You can also get a small sticker to cover the hole to make it less obvious. This is untested, but I think it would work. If anyone sees a flaw in it, let me know. Thanks.

worth considering: key traps won't trap keys if the cuts are progressively deeper. we don't usually allow such bitting because without a 'wiper' (a high cut near the tip) pins can become stuck at the shear line. but if you did key it, say, 12345 or 11235 etc. your key trap might not hold the key.

Screw that Marty! Cool concept but that means you are forced to use a Kwikset! I just use CCTV and catch him in the act. He could always deny it and say someone took his key but CCTV doesn't lie. 🙃👍

Nice.. i Think I’ll do this just for fun this weekend.

My question is, how do you get it apart after the key is stuck?

Very interesting thanks for the video 👍👍👍👍

Also the way you get it out, if you noticed the silver plate in the top of the driver pins shaft, I believe you remove that and remove the pins from the top to get them out, pretty damn sure anyways

This was an awesome video! Thanks for sharing it with us brother

Could you show how to un trap the key after a key was trapped.

You really are a lawyer! Mini-legal pad!

Really informative, and just a bit insidious... thanks. R

Brilliant!

Thanks for the info

Any links to purchase pinning kits containing most if not all of these needed?

That's' a very narrow use case scenario but wow! Would it be cool if one ever needed it.

Liked the lock picking lawyer thunk it was funny and like your videos

Could this be made so the trap is only activated on the first use of the new key? Like a construction key?

I like the idea. You would need access to the old key to implement this control technique tho.

Hahaha, Damn you Marty, I said NO!. And No means NO! Good stuff. Thanks LPL

Genius!

Definitely something I would do.

awesome! thanks

Thanks for a wonderful video...I know little or nothing about locks...im trying to figure out how to re-key my door locks so one key will do them all without paying the $200.00 fee each time for someone else to do it. I watched this "KEY TRAP" video and am totally lost...but wondering...if the lock is permanently locked...how would you go about getting the od key out. Would you consider making a video on that...please and thank you.

Excellent as always LPL. Now, I have a request, unless it's just far too basic and covered a thousand times elsewhere (if so, I haven't come across anything really clarifying). I'm confused as to all the sizes and numbers I see for pins - top, bottom, etc (even ignoring master pins for now). Why all the dimensions? Is there any way to put it all in a way that makes sense to we tyros? Keep up your wonderful work. I know it's appreciated. :)

Best Part is, You get your key back from Old Marty! lol

Woah the pins were just sitting there!? What a coincidence!!

Nice. Wouldn’t the last design also trap a key?

Obvious dirty joke opportunity at 9:20, Damn you Marty, leave her front door alone ;-)

what if the lock opens the other direction(turn key clockwise)? wouldn't the construction key holes be on the wrong side and never engage?

i relay would like to see you pick that lock :)

really cool!

Seems likes great idea as long as the the door unlocks by turning the key counter clockwise. But what happens if the door opens by turning it clockwise? I suppose you can modify the core for that.

and then marty unfortunately kicks in the frame. Great video!

😂Marty... What's it gonna be Mcfly??!!

wow nice idea....

Nice!

Great idea, only bad thing is you can easily enter in your own trap by inserting wrong key, thing which is not so unusual especialy if few persons use same lock.

perry mason would approve

would this protect against bumps?

WOW !!!! AWESOME VID !!!

How well would this stand up in an actual court case?

Old marty eh. Awesome idea. Only u need to be sure and have another door with a key that you can get into in case marty is hiding in the bushes or in a tree waiting for you. Or it could be a hell of a situation. Lol! . Awesome idea!

"Marty". nice

I floated a similar Idea however in my scenario we just create a reverse builder key situation. The difference being the lock allows the other person to enter. They will not know that we know they entered. Good for someone that is not a threat but we may want to catch them in a lie.

Would this only trap that one specific cut of key? If you had another random key on your keyring with the same profile, would there be a danger the lock could trap that key if you accidentally put the wrong one in your front door?

Make sure you get a new control key cut if you're using one of these titan locks since it uses the same bitting as the operating key!

You turned the old key anti clockwise!! That's quite rare. What if you turned it clockwise?? It would've worked like normal, and not trapped the key, right?!?

It's fairly obvious given the numbers you wrote down, but by "higher" you just mean that it pushes the key pin higher, right? Not a higher number of cut?

So how are you supposed to get in if Marty's key is trapped in the cylinder? Boot the door?