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Cellphone surveillance (also known as cellphone spying) may involve tracking, bugging, monitoring, eavesdropping, and recording conversations and text messages on mobile phones. [1] It also encompasses the monitoring of people's movements, which can be tracked using mobile phone signals when phones are turned on.
The recording device was concealed on a person Thatcher had previously approached for help in the crime. [citation needed] Electronic bugging devices were found in March 2003 at offices used by French and German delegations at the European Union headquarters in Brussels. Devices were also discovered at offices used by other delegations.
A hidden camera can be wired or wireless.Hidden cameras are connected, by cable or wirelessly, to a viewing or recording device, such as a television, computer, videocassette recorder, network video recorder, digital video recorder, memory card, or another data storage medium.
A recorder is a device that records some signal. ... Digital video recorders (3 C, ... Video tape recorder; Voice logging;
Consumer call-recording hardware was introduced in the 1970s, along with the first consumer-grade answering machines. [1] These devices were connected to the same physical line as one of the telephones involved in the conversation. While the more sophisticated devices were automatically activated when a call was made, most were manual.
The term Variable Control Voice Actuator (VCVA) refers to a digital recording technology developed by Olympus, which is implemented in many of their digital voice recorders. [1] It prevents the recording of silence, so pauses in a speaker's dictation do not waste time, power or recording space.