The students in Part 3 are examined by the electronic signature examiner. According to the relevant data, the examination of subject three adopts the method of combining system and labor to judge. The system is a vehicle-mounted sensor, and there are security officers and invigilators in the monitoring room manually. Whether the test results are qualified or not must be confirmed by these three parties. After the exam of subject 3, students need to confirm their signatures in the electronic report, and signing is to confirm the exam results. The examiner checked the contents of subject three, not the signature.