They use cameras for counting free spaces as they mention in the video. Nothing is said about security. Having cameras does not mean you have actual recording and surveillance.
(I'm the CTO of LumiGuide who developed this system).
We're currently not using the system for video surveillance. Images from the cameras are only stored in memory for a short period of time while being processed by our CV algorithm.
However, since bicycle theft is a common theme in the Netherlands, there's strong interest from municipalities for using our system for video surveillance. So we're now researching how to extend our system for doing that.
Actually, from the article, the opposite is expressly mentioned: ..."The sensors look like cameras, but the images are not captured or saved, so the cyclist’s privacy is not violated.”
