DIIG Sliding Door Security Bar，17.7-50.5inch Adjustable Locking Window Safety Bar with Rubber Tips,Diameter 1inch Window Security Bar for Home Apartment （White） ...

This security bar from Master Lock has a huge range, adjusting between 27.5 and 42 inches in order to fit most door lengths. Made from heavy-duty, 20-gauge steel, it stays put when needed ...

Read more: Top Home Security Tips When You're Living With Roommates Can I put a security camera outside of my apartment to watch the door? Once you exit your apartment into a hallway, stairway or ...

But if a lock fails, the door doesn’t have a lock, or you don’t trust the lock situation in an apartment or hotel, you can take steps to ensure that the door and the home are secured.