(SCMP.com) Chinese scientists are developing a mini-camera to scan crowds for highly stressed individuals, offering law-enforcement officers a potential tool to spot would-be suicide bombers.
But the technology has raised concerns over its implications for individual privacy and potential abuse by government agencies.
Stress has a range of effects on the body. It can register as changes in heart rate, facial expression and body temperature, which scientists can already monitor from a distance. But the readings are not always reliable. For example, with enough practice, a person can learn to control their heartbeat.
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