The passenger was angry over the theft of the Apple AirPods.
A British Airways passenger who left his headphones on the plane is now watching the person who picks them up take them to work every day on the Find My app.
Three weeks ago, Tim left his Apple earbuds on a flight from Austin, Texas, to London.
He reported the missing device to the staff of the airline.
After logging into the Find My app on his phone, he was surprised to see that his friends were making daily trips from the British Airways Global Learning Academy to an apartment in London.
He attached an image from the tracking app that showed the device was at the airport.
I left my device in the seat on the flight from Austin. He said in the post that he reported it to the police.
British Airways is said to be assisting in finding the AirPods.
The spokesman for the airline said that they are looking into the matter.
British Airways pointed out that the suspected thief might be a colleague from the airport.