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A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are not in the same vicinity of each other to be heard directly.

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pick up an extension and listen to what numbers you press. Anyone with access to your house can install a digital recorder into a phone socket and then listen for the DTMF tones. Anyone with access to … your property could attach a device to your phone line to listen in on everything you say. Phone calls are not encrypted :-) Anyone with detailed knowledge of your phone company could open your local …
answered May 26 '14 by Terence Eden