A peephole is typically installed by a locksmith or a professional handyman. They have the necessary tools and expertise to properly install a peephole in a door, ensuring that it is secure and functions correctly. It is important to have a professional install a peephole to ensure that it is installed properly and does not compromise the integrity of the door. **

No, typically peepholes are designed so that you can only see outside from the inside. This is to provide privacy and security for the person inside the room or building. Trying to look inside through the peephole from the outside would not yield any visibility. **

The term for glasses with a peephole is "peep sight glasses." **

To detect a camera in the peephole, you can use a flashlight to shine light through the peephole from the outside. If there is a camera present, the light will reflect off the lens and you will be able to see it. Additionally, you can use a small, pointed object to carefully probe the peephole to see if there is any obstruction or unusual resistance, which could indicate the presence of a camera. Finally, you can use a camera detector device that is specifically designed to detect hidden cameras, which can pick up on the radio frequencies emitted by the camera. **

It is difficult to determine whether a robber or a stalker removed your peephole without more information. A robber may remove a peephole in order to gain access to your home without being seen, while a stalker may remove it to spy on you without being detected. It is important to take precautions and ensure the safety of your home and yourself, such as installing a new peephole and contacting the authorities if you feel unsafe. **

No, typically you cannot look inside through the peephole from the outside. Peepholes are designed to allow people inside to see out, while preventing people outside from seeing in. This is achieved through the use of a fisheye lens that distorts the view from the outside, making it difficult to see inside. However, it is always a good idea to double-check the specific peephole design to ensure privacy and security. **

Yes, there are add-on cameras with WLAN available for peepholes. These cameras can be easily installed on the existing peephole to provide a wireless connection for monitoring and recording activities outside the door. They offer features like live streaming, motion detection, and two-way audio communication, making them a convenient and secure option for home security. **

Yes, there are add-on cameras with Wi-Fi specifically designed for peepholes. These cameras can be easily installed on the inside of your door, allowing you to monitor who is at your door remotely through a smartphone app. They typically offer features such as motion detection, two-way audio, and night vision for added security and convenience. Some popular brands that offer these add-on cameras include Ring, Remo+, and Brinno. **