No stealie cloney I would said yoda, same colour and year and all that.
I could buy two cars identical and as along as I drive just one at a time I could in theory just pay one road tax said Moriarty 
How does it differ? Just photocopy the tax disc.
Mine runs out end of the month, hasn't even been in the car I don't think, I lost it ages ago.
How does this differ? A cloned reg will not show up as a stolen plate nor theft so
less likely going to be stopped? With the tax disc a copper can check against the disc with reg, but now its sole reliance is upon a computer and information supplied by owner and reports a reg has been stolen?
What happens if your reg gets scanned it will show non paying of road tax? This is about how they will deal with loop holes in the system not if you just photocopy a tax disc the computer will just say no non?
That was an extreme example of buying two cars, but I can go to any petrol station get free fuel and police ANPR systems could charge the real owner for the crime of me filling up and walking away, until I find another reg I could clone?
Unless the
police can identify individual Reg's as legit I can see this being a major issue as any motor factors can make you a plate anytime, hell I know people who can make them without any form of asking ID's like V5's
It begs a question will new number plates be introduced and can only be only purchased from DVLA directly with smart tags on them?
This leads down the rabbit hole of how A) to implement B) how much will it cost US?
