The Times reported the airport, which has 78 million annual passengers, is introducing £50 million facial recognition technology.
The process would begin with passengers going to kiosks to scan their passport and have their photo taken.
Their face would then be matched to the passport and travel details. On subsequent journeys, it would mean they can walk through by simply looking into the camera.
However, the airport has said it will not ask passengers for data, and that they can choose not to use facial recognition.