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.
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.
Ask New Yorkers or Londoners how well video surveillance helps prevent or catch thieves..
[1] http://farm4.static.flickr.com/3024/5859909526_af35d1a4de_z....
[2] http://cdn.trendhunterstatic.com/thumbs/wave-by-joe-mattley....
[3] http://www.landscapeonline.com/products/images/prod_baa1e255...