The senses identified as being the most common to trigger someone are sight and sound, followed by touch and smell, and taste close behind. A combination of the senses is identified as well, especially in situations that strongly resemble the original trauma.
Telemarketers attempt to sell products to large segments of the population over the phone. Many people are irritated by telemarketers. Telemarketers often use headsets so their hands are free to operate a computer. Telemarketing is one of the most controversial types of marketing.
Telemetry is an automated communications process by which measurements are made and other data collected at remote or inaccessible points and transmitted to receiving equipment for monitoring. The word is derived from Greek roots: tele = remote, and metron = measure. Systems that need external instructions and data to operate require the counterpart of telemetry, telecommand.