ALEXANDRIA, Va., March 24 -- United States Patent no. 12,586,434, issued on March 24, was assigned to QUANTA COMPUTER INC. (Taoyuan City, Taiwan).

"System and method for detecting people entering and leaving field" was invented by Mao-Cheng Huang (Taoyuan City, Taiwan), Cheng-Ta Wu (Taoyuan City, Taiwan), Chan-Jung Hsu (Taoyuan City, Taiwan) and Jia-Sheng Lin (Taoyuan City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for detecting people entering and leaving a field is provided. The method includes receiving, by a receiver arranged above an entrance, measurement signals transmitted by a transmitter equipped on a person. The method includes obtaining a signal strength indication (RSSI) of t...