According to The Register, eagle-eyed travellers at Heathrow have spotted three separate glitches on airport departure boards. One display showed a Windows activation watermark behind the flight list, while another appeared to be stuck on dates from September 12 and 21. A third screen showed a network dialog and taskbar that resemble Windows 7, suggesting the signage software may be running a long-outdated operating system.

These sightings are anecdotal and come from a single report, so there is no independent confirmation or contrasting account. The Register treats them as offbeat examples of aging airport IT rather than evidence of a systemic failure.

Taken together, the incidents highlight how passenger-facing systems can expose the underlying software that powers them, even when that software is years past its supported life.