The 4G GPS tamper proof wristbands uses Qualcomm communication chips, is equipped with multiple sensitive hardware tamper-proof designs, and has three positioning modes: GPS/Beidou, wifi, and LBS, making the product safer and more stable during use.At the same time, the 4G judicial tamper-proof watch also has real-time positioning data transmission, physical tamper-proof, health management, instant messaging, SOS emergency help, watchband disconnection alarm, cross-border alarm and other common functions, as well as portable two-way communication and command issuing functions. Create a good interactive environment to promote the timeliness of work,Precise positioning, multi-mode fence design, and blind spot reporting function make supervision more portable, and the simple web-side operation interface brings more convenience to supervision work. It is widely used in the attendance of outside supervision and special supervision. Trajectory tracking of the crowd, automatic entry and exit management, medical bail, mentally ill patients, Alzheimer's disease, COVID-19 epidemic prevention, etc.