While I feel the need of a nation-wide (EU-wide) digital identity because it's damn absurd to have eIDs and being not able to use them for all public services a

While I feel the need of a nation-wide (EU-wide) digital identity because it's damn absurd to have eIDs and being not able to use them for all public services as mere keys, I do reject full strength the wallet concept. IDs are serious business, smartphones are surveillance devices, out of the government and the citizen controls and connected 24/7/365, they MUST NOT be used for anything serious. I do want to have a simple NFC reader for public authority and activities needed some data from the citizens (like a bank to open an account, or just a major-age verification to sell alcohol at a supermarket, being just able to to se age) but FROM MY eID card, not from a mobile app. The system could be pretty simple, a grocery store authenticate as itself to a public service, the public service get the citizen ID, and know the grocery store can only get a "major age or not", no privacy issue in the process, no needs to flash Qr and so on. Similarly a police officer can read ANY eID document (let's say driving license, national ID card, passport, even a public school card) and from it accessing other docs depending on the activity he/she declare, again no privacy issue. But again no damn need of mobile stuff. Oh, and aside, public money, public code, so all IDs MUST be open hardware and open-source, the chip, the middlewire and the service as well. So the "no privacy issue" is a thing any citizen can acknowledge or not.