Same Door Principle – Pink Door Case Study

Same Door Principle – Pink Door Case Study

Tactical Lock Picking Principles

Catch Line.

In the Tactical Lock Picking Course I teach I always try to impart special principles or rules of thumb about the tactical portion of lock picking even if I don’t teach the principles/guidelines as a stand alone segment. One of the best ways to show some of these guidelines is through case studies. This one is pretty short and pretty sweet.

The LONG title for this guideline is “Same lock, same key, same door, same code” with an “etc.” on the end. What it means is basically this:

If you want to know how to get through one obstacle inside a given area, check other similar obstacles in that given area…

whether it be buying a similar lock, or using another 4-digit code that also works somewhere else in the same facility or if you are in one building check the other doors to the left and right of said obstacle-door to see how they operate inside and out so that you have more knowledge about how your obstacle may be defeated.

The Pink Door

The door isn’t really pink. The frame of the window is kind of a dark reddish shade of pink. So sue me 😉 Here’s the point. GLASS helps you not only see inside the room to the opposite side of the door you are trying to enter (think thumb turn machines and push bars for your “DDT” tool) but it also can show you the inside handles of the OTHER doors that are part of that same room. Pictured below.

“Is the bottom gap of the doorway big enough to use a UDT tool? Is there a knob or a handle or a thumb press on the opposite side of the door.”

“Oh look, a window! Oh look, another door that is part of that same room! Oh look, I can see the INSIDE of that other door handle. And in an installation like this BOTH of these doors are probably using the same hardware!” Same door principle in action.

“Oh look, I can see a door latch on the inside and outside of that other door, meaning that THIS door probably has the same, so a UDT will probably work here”.

One more for good measure.


The “Same door/key/code/lock” Principle reaches kinda wide. I have a few more case studies using this same principle which will be published in the future. Practicing on a specific brand of padlock (no matter what the pin pattern or key cut is) will help you get intel and a feel for a specific type/brand of lock. Knowing that a specific building has a TON of the same doors can offer you the chance to play with all three sides of a door and get a feel for it (Pull side of door, Push side, and the thin side where the latch and latch strike plate meet). This comes with practice and experience. Even picking open padlocks on your couch will give your brain some networks to follow for when you are in the field and need to pop open a specific padlock on a heavy gate and you will realize “Oh shit, I pick a padlock JUST LIKE this one all the time, and I know that the tension is a little wishy-washy for the first few pins” etc.

Hope this little principle helps you in the field some day, and don’t forget; like my friends over at say:

1. Never pick or manipulate with the aim of opening any lock that does not belong to you, unless you have been granted explicit permission by the lock’s rightful owner.

2. Never disseminate knowledge or tools of lockpicking to individuals whom you know or whom have reason to suspect would seek to employ such skills or equipment in a criminal manner.

3. Be mindful of the relevant laws concerning lockpicks and related equipment in any country, state, or municipality where you seek to engage in hobbyist lockpicking or recreational locksporting.” –

-Have fun, be smart, be legal!



Leave A Reply