This document discusses the history and applications of telemetry. It begins with early space missions like Sputnik that used telemetry to transmit data from sensors. Telemetry is now used widely in various industries to transmit sensor data wirelessly via networks. It allows remote monitoring of things like fleet vehicles, manufacturing equipment, homes and human health. In healthcare specifically, telemetry helps address issues like rising healthcare costs and a lack of professionals by enabling remote patient monitoring through self-monitoring devices. However, increased use of such convenient technology raises privacy concerns regarding how much personal information people are willing to share.