The next time you're pulled over for a traffic violation, you could be asked for more than license and registration. You may find yourself peering into an iPhone that scans your iris, records your facial features and takes your fingerprints.

Some police departments plan to start using Moris iPhone scanners this spring. These boxlike, portable biometric scanning devices attach to Apple (AAPL) iPhones, and the two products work together. The Moris is equipped with iris, fingerprint and face recognition technology. It can connect wirelessly to a database of biometric scans that can bring up records of past offenses and confirm that those stopped are who they say they are.

The Moris (Mobile Offender Recognition and Identification System) device is the product of Plymouth, Mass.-based BI2 Technologies. Founded in 2005, the privately held company makes software and hardware biometric technology products used in some areas, including identifying and locating missing children and seniors...