Contactless Access Control System Based on Voiceprint Recognition

In order to increase the security and convenience of access control system, a contact-free access control system based on voiceprint recognition is designed and has been tested for many times. This system takes the speaker’s voiceprint feature as the “key”, and it contains an Android-based voiceprint recognition APP—which is related to voiceprint registration, voiceprint verification, model addition or deletion and other functions—and a self-designed control system which communicates with the APP through Bluetooth technology. During functioning, a random 8-bit dynamic number was obtained from the cloud through the network API interface provided by IFLYTEK (Chinese information technology company) as the text password, and then the voiceprint information was uploaded to the cloud for identification, and the result was transmitted to the hardware control module through Bluetooth. By testing, the similarity between the speaker’s voiceprint information and the corresponding model is more than 97%, and the negative rate of recognition was 0%, with the average recognition time less than 0.4 s.