Digital signage on number plates has been approved for use in two states in the USA - California and Florida, - with many others look set to follow very quickly behind.
Whilst parked cars can now display advertising, promotional or sales messages as the license plate transforms into a digital signage platform. Known as Reviver, or the rPlate, the tool can also be used to deliver emergency broadcasts such as weather warnings or Amber Alerts. It can also automate toll charges and parking fees.

The device was first showcased at the North American International Audo Show, and is designed to offer DMV registration, hyper-local advertising, telematics and more.
The rPlate has a 6-inch by 12-inch display with an anti-reflective screen to ensure visibility in poor weather. It also houses a GPS, accelerometer, storage, CAN bus access and RF sensors.
"The rPlate is the first ever 'fifth screen' or digital signage platform to grace the back of a vehicle and can be installed as an aftermarket product or seamlessly integrated directly into the design of the vehicle," Allan Cooper, partner, Reviver, said in the release. "It can display hyper-local targeted messages to a captive audience when a vehicle is legally parked in any location. One example is the opportunity for auto retailers to use the rPlate to display customized messaging - such as the brand they sell, a lease payment specific to vehicle models, or a sponsored community event or charity on service loaner vehicles and company vehicles."
I wonder how long this will take to reach Australasia?