MIT researchers at the Computer Science and Artificial Intelligence Laboratory after using humble WiFi waves to sense movement behind a wall, has now improved its technology to the point that it can remotely — from behind a wall in another room — can detect heart rate and respiration.MIT has named it as WiZ(Which might be a play on “Wi-See”,but it isn’t clear),last year it was Wi-Vi and now ,with some further improvements it is called WiZ .
MIT successfully used this technology to track the rise and fall of people’s chests, based on a person’s chest rising and falling, the CSAIL group can determine their heart rate with 99 percent precision.This technology also used to non-invasively check a sleeping baby’s breathing and pulse,so Parents could watch their baby’s heart rate from another room without using any kind of wearable device or special sleeping pad. WIZ can use radio waves to accurately track up to four people at a time.
MIT professor of electrical engineering and computer science Dina Katabi, the paper’s co-author who also directs the Wireless Center says,
It has traditionally been very difficult to capture such minute motions that occur at the rate of mere millimeters per second. Being able to do so with a low-cost, accessible technology opens up the possibilities for people to be able to track their vital signs on their own.
The CSAIL team has been idealizing its Wi-Fi tracking for a while now. It has withal used radio signals for 3D tracking.
Katabi’s team is at present turning on higher resolution capabilities that would permit them to detect actual body silhouettes, gestures, and even emotions