CLEAR is a private, fee-based service that takes your biometrics and lets you identify yourself with your fingerprints or retina scan instead of showing an ID. At airports where they’re located you can then skip to the front of the security line – whether PreCheck or regular security.
But the TSA now says CLEAR’s systems have a security vulnerability and some key lawmakers want everyone using CLEAR to still have to have their IDs verified at the security checkpoint.