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PHILADELPHIA (CBS) — Sacramento is the first United States city to start testing out digital license plates.

The tags use wireless technology allowing messages to be changed remotely or by drivers.

digital license plate Sacramento Becomes First U.S. City To Test Digital License Plates

credit: cbs3

That means a plate could report if a car has been stolen.

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It can also display important amber alert information.

Dealerships are expected to sell plates for $700.