I once hired a locksmith to come let me in a front door. To my amazement, he walked up to my locked door, took out a regular credit card, and wedged it between the strike and the frame, immediately opening the door. [1] I wasn’t even mad it cost $150 or so, I learned a cool new trick that day and also learned how insecure my door was. Needless to say I modified the trim and door jamb to make the door much more resistant to that type of attack.

[1]: https://www.art-of-lockpicking.com/how-to-pick-a-lock-with-a...