Everyday things with hidden features we weren’t aware of

[post_page_title]Elevator doors[/post_page_title]

Obviously, we know what elevator doors are used for, but have you ever noticed that tiny hole towards the top of the door? You only see them when you’re waiting for the elevator, since they’re not on the inside of the door.

Elevator doors

This is actually a keyhole that’s used by repair professionals or the maintenance staff in the building. When the elevator malfunctions and causes the doors to get stuck, a “drop key” is inserted into the hole to open the doors manually.

Recommended For You

How to build your own gaming rig

What’s better than creating something totally from scratch? It’s a fantastic feeling to think to yourself, ‘I did it.’ Even