Concerns over the privacy risks posed by smart glasses have been highlighted by the Crown Dependencies.

The Isle of Man has joined data protection authorities in Jersey and Guernsey to warn people about the potential issues raised by the technology.

Smart glasses are becoming increasingly popular, offering hands-free features that allow wearers to take photographs, record video and capture audio by tapping the frame.

However, their discreet design can make it difficult for people nearby to know when they are being recorded.

In a joint advisory published on Wednesday, the three authorities warn that the devices can capture people, conversations and personal information without their knowledge.

Unlike a smartphone or traditional camera, there may be little to indicate that a recording is taking place other than a small red light.

Recordings may also be stored or processed by manufacturers, including through cloud services, meaning information captured through the glasses could be handled beyond the Crown Dependencies.

Isle of Man Information Commissioner Dr Alexandra Delaney-Bhattacharya said: ‘Smart glasses can be a real help and for people with disabilities especially, they open up the world in ways older technology never could.

‘But the same features that make them useful also make them easy to misuse. We know from experience that women and girls are disproportionately the ones filmed without consent, whether by a stranger on the street or someone at a party.

‘It takes only a glance to record someone and that footage can end up anywhere including with a company beyond our shores.

‘Our message is simple: think before you share, and ask yourself how you'd feel, or how a woman in your life would feel, if it were her in that footage.’

The three authorities are urging individuals and organisations to be mindful of the people around them when using the technology and to consider the privacy implications.

Their advisory sets out practical steps for individuals and organisations already using smart glasses or considering introducing them.

The guidance is available through the Isle of Man Information Commissioner’s website.