What is a bug?
A bug is a device for the clandestine recording of a conversation or a discussion. It differs from telephone interception which is about overhearing and/or clandestinely recording a conversation over a telephone. Bugging of a personal face-to-face conversation can be done inside a room or a conference hall or in a means of transport. One would recall how the Federal Bureau of Investigation (FBI) had bugged the car of Tahawur Hussain Rana of the Chicago Cell of the Lashkar-e-Toiba (LET) in order to clandestinely record his conversations with David Coleman Headley while they were travelling in the car together.