PSA: Handcuff keys are universal. I've carried one on my key ring for about 9 years now. This one breaks off at the base if you need it specifically from your pocket without taking out your whole key ring. 8 dollars at most tactical stores or certain sporting goods outlets.

If you can't, then just go to Walmart and you can find a key that will work in real handcuffs from the aluminium kind they have in the toy section. Can't vouch for their durability after more than one use though.

Also useful for undoing zip tie cuffs as well in the event you encounter those. By inserting the tip of the Handcuff key into the slot where the arrow is pointing you can compress it and remove that hand from the zip tie. With a handcuff key you can even do this behind your back.

I have personally done this one with both hands zip tied behind my back.

Modern-day law enforcement and military body armor has a quick collapse pull tab on the front of it. Usually under the flap where their rank goes. If you pull it all of the body armor falls apart instantly. It's very easy to pull in the event that someone is on top of you.

Certain places in the US will use plate carriers (left) instead of full armor (right). Plate carriers do not have quick release tabs on the front. Easy way to tell is that a plate carrier has straps that go directly onto the vest. Full armor has the shoulders flush with the vest

In the event that someone is wearing a plate carrier they will have giant buckles right over the back of their shoulders however which just require an unclipping.

Wow what psycho hacked my Twitter account and created a thread like this. I could never be coerced into divulging such quick weak points in defense systems like figuring out a boss battle pattern in a video game. No sir. Clearly an imposter. Most likely has a mustache.