With the continuous construction of 5g and the gradual withdrawal of 2G and 3G, ltecat. 1 in the 4G family is quickly popular because of its characteristics, and has become a new favorite of the Internet of things with Nb IOT.
Bluetooth gateway plays the role of "data collector" and controller in the whole scheme. In short, it is used to collect Bluetooth device broadcast data in real time or remotely control Bluetooth device and location positioning function.
As a vulnerable group in the society, if you, as a parent, as a school administrator, can't guarantee the safety of students 100%, then you should configure a smart watch for it, so that it can be found.
In the future, the trend of intelligence will continue to improve. Both transportation and daily entertainment are becoming more and more intelligent. Electronic tickets are an effective help to help us move towards intelligent life and entertainment.