ALEXANDRIA, Va., July 16 -- United States Patent no. 12,361,901, issued on July 15.
"Anti-lost device based on an electronic ink screen" was invented by Haiqi Wang (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An anti-lost device based on an electronic ink screen is provided, the anti-lost device based on the electronic ink screen comprises a button, a circuit board and an electronic ink screen; the circuit board includes an ink-screen driving Bluetooth sensor and a find my Bluetooth sensor; when the anti-lost device is lost, a APP of a mobile phone sends a lost signal to the circuit board, the Find my bluetooth sensor sends the location information to the APP, when the button is pressed se...