Here's an idea then......
One card, and it becomes your National Insurance No, your NHS No, your Driving Licence, your Tax No, your police record No.....could even be your employee No....
no need now to have plastic company airside logo cards....
no need to have CRC checks every time you change employer(oops that might make some people redundant)
Think of all that plastic, effort time and money savings that could be employed by such a system.....think of the planet......or even think of the tax cuts we could have by scrapping so much.....
Now there's a thought....