

There are two PINs, PIN1 for ZKP and PIN2 for digital signing. The card does nothing without one.
Most EU countries provide some way for citizens to sign documents using a private key tied to their legal personage.
Putting it on the ID card they are given anyway just makes sense.
My final paragraph is there to explain that a lot of “digital signatures” aren’t really signatures in any meaningful way. What goes into the actual file doesn’t matter at all, UNLESS it’s the aforementioned cryptographic signature.














Also food delivery.
In Finland, there used to be “pizza-online” which was really just a directory and ordering system for restaurants that already did delivery themselves.
They took a very small comission, as the site didn’t really do anything except connect restaurant and customer (and provide a review platform). For a long time, they didn’t even have an app.
You’d log in, select a restaurant, browse their menu and place an order. The order goes to the restaurant, and after that the site’s job was done.
It was massively succesful. Every hole in-the-wall pizza place was on there. Finding good food was easy and cheap, and the restaurants reached more customers than ever. And the platform including reviews led to competition in not just price, but quality.
Then pizza-online sold to foodora, and they got shut down, and psrticipating restaurant were no longer allowed to deliver themselves, and the cut taken by the platform skyrocketed.