I always forget my cell phone. Is there anything that will call the police when the phone is not far from me?

Yes, the mobile phone anti-loss artifact, and now there is this key ring mobile phone two-way alarm finder. Just like a key chain, it is easy to carry around. When Bluetooth is connected to the mobile APP, there is a separate reminder function. When the APP is running normally, it will disconnect and make a call outside the Bluetooth range, and record the breakpoint position for easy retrieval.

Extended data:

The working principle of Bluetooth intelligent anti-lost device;

Bluetooth intelligent anti-loss device is a kind of anti-loss device specially designed for smart phones by using Bluetooth technology. Its working principle is mainly to judge whether the items are still in your safe range through the change of distance.

Classification of bluetooth intelligent anti-lost device;

1, according to the market classification, there are two main types of intelligent anti-lost devices, one is equipment anti-lost, and the other is civil air defense anti-lost; The form of anti-loss devices used to prevent equipment loss is relatively simple, and there are many anti-loss patches or anti-loss pendants, while there are many anti-loss devices used in civil air defense, such as pendants, watches, necklaces, shoes and so on.

2. According to the classification of technology, there are three types of intelligent anti-lost devices: Bluetooth /WIFI intelligent anti-lost devices, GPS intelligent anti-lost devices and RFID intelligent anti-lost devices. A relatively novel intelligent anti-lost device combined with magnetic field or sensor technology, and some of these intelligent products have already faced the market.

Source: CSDN- Bluetooth Anti-Lost Device