The Dutch government as of January the 1st has started the DigiD initiative to get all citizens a single digital ID that they can use for all online government services.
Their information on you is freely available to you alone. It purpose is that it is more easy to contact the government, fill in your tax bills or ask for a license and more of that kind of stuff. Until now you had to go to the specific governmental branches and wait in line. Now you can do it at home or make an appointment online.
Again found on blog.Tijs.org
