This sounds dubious to me...
How on earth can they detect that you're using fake plates?!
Link
Joburg metro police have caught a 38-year-old woman who received 63 speeding fines to the value of R23 000 in just eight months.
On Wednesday the driver of a silver grey Ford Fiesta was travelling along Main Reef Road unaware that metro police officers - with new technology that tracks down vehicles using false number plates - were in the vicinity.
How on earth can they detect that you're using fake plates?!
Link