Health code has the function of positioning, accurately identifying a person's position, and allowing public security organs to find wanted criminals to a greater extent. Later, the national health code can be connected with the public security system to find the whereabouts of criminals more accurately.
Face recognition has the following characteristics:
1, optional: users can collect face images almost unconsciously without the special cooperation of face collection equipment, so this sampling method is not mandatory;
2. Non-contact: users can get face images without direct contact with equipment;
3. Concurrency: Multiple faces can be sorted, judged and recognized in practical application scenarios;
4. Conforming to the visual characteristics: judging people by their appearance, simple operation, intuitive results and good concealment.