Perhaps they could borrow some from the UK that has a similar program sniffing out miscreants that have not purchased a government permit to watch TV.
BBC's Magic TV Detector Vans Kept Secret from the state-secrets dept
As many of you probably know (especially if you live in the UK), you have to buy a license to have a TV (or even a TV tuner card for a computer). The license fees go to pay the BBC to operate.
Apparently, the BBC has some secret "TV detector" vans that can sit outside your house and determine if you have an illegal TV (I only wish I were making this up).
Someone filed a Freedom of Information request to find out how these supposed detector vans worked, but the request has been denied, and these magic detector vans shall remain a state secret.
