### Question
How is the "biometric identifier information" defined?


### Answer
The term **biometric identifier information** is defined in *49 U.S.C. § 44903* as follows -

> the distinct physical or behavioral characteristics of an individual that are used for unique identification, or verification of the identity, of an individual

#### Citation:
  - *49 U.S.C. § 44903*
  - Heading: **SUBTITLE VII-AVIATION PROGRAMS > PART A-AIR COMMERCE AND SAFETY > subpart iii-safety > CHAPTER 449-SECURITY > SUBCHAPTER I-REQUIREMENTS**

