The body-worn cameras worn by the ticket inspectors record sound and image for security-creating purposes.

But the Privacy Protection Authority, formerly the Data Inspectorate, believes that the cameras violate the Data Protection Ordinance.

- In Stockholm's public transport, several hundred thousand people travel daily.

This technology with continuous recording means in practice that a large number of travelers risk being monitored with video and audio recording, says Jeanette Bladh Gustafson, lawyer at the Privacy Protection Agency's camera group, in a press release.

The cameras continuously record audio and video stored for one minute.

Then the material is erased unless the ticket inspector presses a record button.

Although the Privacy Protection Authority believes that the cameras can be used for preventive purposes and to be able to document threatening situations, the authority believes that a pre-recording of 15 seconds is sufficient.

The authority also criticizes the fact that SL has failed in its way of informing about the camera surveillance, among other things in terms of not only image but also sound being recorded.

- It is serious that SL does not inform that sound is recorded because passengers in SL's traffic network can not reasonably expect to be intercepted, says Jeanette Bladh Gustafson,