Not sure how accurate this is, but it seems fairly believable. http://youtu.be/Okk26NOLry8 http://youtu.be/Okk26NOLry8 EDIT: The link above is a Reuters repor

Not sure how accurate this is, but it seems fairly believable. http://youtu.be/Okk26NOLry8 http://youtu.be/Okk26NOLry8 EDIT: The link above is a Reuters reports (Uploaded in 2011) on London's use of Ipsotek's Tag & Track software (now owned by BAE Systems http://www.baesystems.com/page/BAES_026518 http://www.baesystems.com/page/BAES_026518) EDIT 2: Sorry, apparently not owned by BAE Systems, they're partners.