Introduction： With the development of science and technology, more and more intelligent door locks with networking functions have been developed. Together with the development of Internet of Things and the popularity of fingerprint biological unlocking technology, the intelligent door lock is booming now. Nowadays, the intelligent door lock has integrated such unlocking methods as fingerprint, password, NFC and blue tooth. We may easily set up the intelligent door lock via mobile APP and link it with domestic intelligent products. The intelligent door l···