1. The driver’s safe driving principle: [Blow air to measure alcohol anytime,anywhere,real-time data updating]
2. The operation is as follows:
[①. Open the APP on the mobile phone, connect the wine tester with Bluetooth, and confirm the identity of the tested person by face recognition]
[②. The wine tester displays a random code and starts to blow air, and the process of blowing air is taken and uploaded to prevent cheating]
[③. the wine tester can accurately determine whether the tested person is blowing air]