How to Prevent Opening an Interior Door With a Credit Card

Opening a door with a credit card is possible because the thin material of the card is able to slip under the door bolt and simply slide it out of the way. This presents a problem for homeowners because of outside threats, but it can also be problematic inside the house if a family member, guest or tenant is getting in doors where they shouldn't. To prevent the possibility that an interior door can be opened with a credit card, some extra security measures must be taken.

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Adding a dead bolt is a sure way to prevent someone using a credit card to open a door.

Step 1

Replace the trim around your door frame. A thick trim that covers the strike plate (the metal part that's on the door frame) will prevent someone from slipping a credit card between the bolt and the plate. A door that swings inward will not be affected by a thicker or overlapping trim.

Step 2

Install a door latch guard on the door if it swings outward. This is a metal plate that screws in next to the door handle and covers the strike plate so a credit card cannot get to the bolt.

Step 3

Install a dead bolt that can be opened only with a key. A deadbolt that slides about an inch straight into the door jamb cannot be opened with a card, unlike a regular door handle that can be pushed out of the way.


Desdemona Delacroix

Desdemona Delacroix has been working as a freelance author in her spare time since 2000, writing short do-it-yourself and current events articles. She holds a Bachelor of Science degree in psychology from the University of Maryland University College, and she occasionally offers tutoring services in writing to undergraduate college students.