For the past three years, the TSA has tested an electronic pilot identification screening system called CrewPASS, or Crew Personnel Advanced Screening System.

CNN: U.S. pilots to get speedier screening procedures

The pilot allows electronic applications ("apps") to be used by medallion taxis to accept electronic hails ("e-hails").

ENGADGET: Judge dismisses lawsuit against NYC taxi-hailing app pilot

Huffington was on a United Express flight operated by Atlantic Southeast Airlines from Washington to New York on Saturday night when a fellow traveler became upset when she allegedly continued to use her smartphone after the pilot asked passengers to turn off electronic devices before takeoff.

CNN: Arianna Huffington's phone use upsets passenger