United Airlines (UAL) - Get Report is taking an equity stake in Clear, a technology company that uses fingerprints and iris scans to verify a traveler's identity at security checks, The Wall Street Journal reported on Monday.

Clear, which operates at 31 airports as well as at stadiums, arenas and some Hertz rental car locations, provides biometric scanning technology that allows travelers to bypass airport security and other identification procedures - and the lines leading up to them.

Terms of the deal weren't disclosed.

Clear will launch at Newark Liberty International Airport and expand at Houston's George Bush Intercontinental Airport later this summer, according to the Journal. The company is also seeking approval from Chicago to open fast-check security lanes at O'Hare International Airport, the Journal said.

Clear charges most members $179 annually, but United said it would enroll its top-tier frequent fliers free of charge and offer a discount to other members of its loyalty program.

Delta Air Lines (DAL) - Get Report  has a similar relationship with the New York-based company, and also offers discounted Clear memberships for frequent fliers, according to the Journal. It has a 7% stake in Clear, according to securities filings. 

Shares of United were up 0.05% at $93.41 in early trading on Monday.