The airline industry has presented its vision for a security "checkpoint of the future," which would speed up safety checks by sorting passengers according to the level of risk they pose.

Under the system, airlines would make use of passport and other information to categorize a passenger as a frequent traveler, normal or "enhanced risk," and then steer them toward different checks. All passengers would walk through scanning corridors without stopping, unpacking their bags or stripping off clothing unless they trigger an alarm.

Although the concept faces technical and legal pitfalls, International Air Transport Association chief Tony Tyler told reporters Tuesday that some elements are already in place, and others on the way.