MIT Can Now Track a Heart Rate Through a Wall With Wi-Fi Signals — Tech News and Analysis
Parents could watch their baby’s heart rate from another room without using any kind of wearable device or special sleeping pad with a new development out of MIT that uses Wi-Fi signals to track the rise and fall of peoples’ chests.
Researchers at the Computer Science and Artificial Intelligence Laboratory transmitted a low-power wireless signal through a wall and measured how long it took the signals to bounce back. Changes in the reflected signals allowed the team to measure movement, or even minute chest movements.
Based on a person’s chest rising and falling, the CSAIL group can determine their heart rate with 99 percent accuracy. The system can track up to four people at a time.
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