UWB-based social distance monitoring wearable devices. Each device will measure the other with an accuracy of 10cm. The alarm distance can be set. When any two devices are close to the set distance, an alarm will be triggered. After each person wears this device, the social distance between the persons can be maintained, which can be used to prevent COVID-19 in the crowd spread.Contact: zhyinch@gmail.com. Company website: http://www.huaxingzhikong.com/
How does it measure distance? What technology is used?