https://www.eyecooltech.com/biometric-border-control/ Biometric Border Control Challenge 1 Traditional biometric border control is realized by checking passports manually, which takes a long time; At the entrance and exit with a large number of travelers, the inefficient border control method will cause a long queue of visitors. 2 The traditional way of entry-exit identification is easy to be used by terrorists, refugees evading visas and illegal immigrants. 3 Unable to conduct real-time analysis of inbound and outbound tourist flow