As used within this part, the term:

(1) "Device" means an instrument or apparatus used for overhearing, recording, intercepting, or transmitting sounds or for observing, photographing, videotaping, recording, or transmitting visual images and which involves in its operation electricity, electronics, or infrared, laser, or similar beams. Without limiting the generality of the foregoing, the term "device" shall specifically include any camera, photographic equipment, video equipment, or other similar equipment but shall not include merely focusing, lighting, or illuminating equipment, optical magnifying equipment, or a device commonly referred to as an "individual hearing aid," and not including a "pen register" or "trap and trace device" as defined in this Code section.

(2) "Pen register" means an instrument or apparatus which records or decodes electronic or other impulses which identify the numbers dialed or otherwise transmitted on the telephone line to which such device is attached, but such term does not include any instrument or apparatus used by a provider or customer of a wire or electronic communication service for billing, or recording as an incident to billing, for communications services provided by such provider or any instrument or apparatus used by a provider or customer of a wire communication service for cost accounting or other like purposes in the ordinary course of its business.

(3) "Private place" means a place where one is entitled reasonably to expect to be safe from casual or hostile intrusion or surveillance.

(4) "Trap and trace device" means an instrument or apparatus which captures the incoming electronic or other impulses which identify the originating number of an instrument or apparatus from which a wire or electronic communication was transmitted.