Ten iris recognition passages for customs clearance were put into trial use in Macao Special Administrative Region (SAR) on Monday.

The hands-free technology scans irises to determine  personal identity. It is more hygienic. Meanwhile, it helps solve the problem that some people fail to use self-service customs clearance because their fingerprints are unclear, which greatly improves the security and efficiency.

The test run of iris recognition passages will last until Aug. 25.