Hidden Pinhole Cameras, Microphones, and Digital Video Recorders
There are neckties that cost less than thirty five dollars and contain a pin hole camera, microphone, and digital video recorder.
Such a device could be used to record a family event such as a wedding or a family reunion. The device could also be used in a lawful investigation to collect evidence. Unfortunately, the device could also be misused by someone who is doing a survey of an area where they plan to do a terrorist act.
In the past, law enforcement and intelligence personnel were aware of people using a camcorder to film bridges and critical infrastructure. It is important to remember that video cameras are now small enough that they can be hidden in car keyfobs, ties, and baseball hats. These devices hold the video in a microSD card.
Other pinhole camera systems may transmit wirelessly to another location where someone may be looking at the video or recording it. Someone may choose that option rather than risking a search and having a microSD card that contains surveillance video. It may seem hopeless to try to catch someone who is conducting a covert surveillance on a possible target.