
What is the small hole in a door called?
Doors often have a small hole with a fish-eye lens for security purposes. They are commonly called 'peepholes' but I'm sure I have come across a formal architectural term for this type of aperture,
What is it called when you look through a door?
(October 2017) View through a peephole. A peephole, peekhole, spyhole, doorhole or door viewer, is a small opening through a door allowing an individual to look from the inside to the outside.
What is a peephole in a door?
A peephole, peekhole, spyhole, doorhole or door viewer, is a small opening through a door allowing an individual to look from the inside to the outside.
What is a door with a fish eye hole called?
Doors often have a small hole with a fish-eye lens for security purposes. They are commonly called 'peepholes' but I'm sure I have come across a formal architectural term for this type of aperture, possibly Latin or Greek.

What is a door viewer?
A peephole, peekhole, spyhole, doorhole, magic mirror or door viewer, is a small opening through a door allowing the viewer to look from the inside to the outside. In a door, usually for apartments or hotel rooms, a peephole enables to see outside without opening the door.
Can you see inside with a peephole?
Simple peepholes may allow people outside to see inside. A fisheye lens offers little visibility from the outside, but that can be defeated using a peephole reverser. Some peepholes have a shutter that falls down on the hole when nobody inside is holding it. Digital peepholes have a camera outside and an LCD screen inside, without any information going from the inside to the outside.
