Phone Designed for Eavesdroppers (Feb, 1932)
This is pretty interesting indication of how recent our idea of “privacy rights” are. Apparently people were so curious as to what others were saying on the phone line that they would tap into them and listen in. This caused the voltage to drop and the signal to degrade. The solution? Add pre-installed, high-quality phones where they could “officially” listen in.
Phone Designed for Eavesdroppers
TELEPHONE companies are much concerned by eavesdropping on rural party lines because it interferes with transmission over the line. To take down the receiver increases the electrical resistance of the circuit.
It is proposed to stop fighting the apparently incurable tendency of rural subscribers to listen to other people’s business and to recognize it by installing special telephone instruments to which eavesdroppers can listen without increasing the electrical resistance of the circuit or interfering with its legitimate use.