IEEE

Detection and tracking of a human using the infrared thermopile array sensor — “Grid-EYE”

Abstract: Human detection using sensors preserves the privacy. The Passive Infrared (PIR) sensor is used to detect the presence of human. But this detects the human only if they are in motion.
XDA Developers on MSN

I built a ghost-proof ESP32-powered presence sensor and here's how it works

Bermuda enables device proximity in a room without using any trackers or apps. Using an ESP32, it works as a Bluetooth proxy, ...
IEEE

An Optical-Camera Complement to a PIR Sensor Array for Intrusion Detection and Classfication in an Outdoor Environment

Abstract: An important issue faced while employing Pyroelectric InfraRed (PIR) sensors in an outdoor Wireless Sensor Network (WSN) deployment for intrusion detection, is that the output of the PIR ...
Liverpool Echo

The ECHO joined Merseyside Police as hundreds of officers swarmed unsuspecting area

It was dark and silent, with a chill in the air, as an army of police vehicles blue-lighted their way through the city, headed for one destination. If you told me at 6.20am that Merseyside Police were ...