They faced the same question. Here is their answer: https://github.com/orgs/swiyu-admin-ch/discussions/20
The tldr is that they have a legal requirement to bind "verifiable credential shares" with the same human who got the e-ID originally, up to the current best practical technology. On Android, they judge that to be "keep the private key in the HSM and require a local biometric (or PIN) unlock to use it". This is why they argue that proving your age will not be possible without a mobile device.
You can prove your age anonymously, for anonymous account, which can be used on a non-mobile device. It's just that the proving the age part must happen from a mobile device.
À propos of more or less nothing: in the Swiss context, websites requesting the proof will be required to request the least information necessary for their need. They must NOT ask for your name, ID number, or birthdate if the question they are trying to answer is, "is this person old enough for our service?"
This is excellent technology, and the Swiss law on it that we are voting for next weekend is an excellent law, so I urge a OUI/JA/SI vote on it, if you're a Swiss citizen.
Glancing at the thread, I don't see that conclusion. User 'sideeffect42' cites some laws and says
>> As I read this it nowhere says that the e-ID has to be bound to a device. It only speaks about binding it to its owner which (IANAL) could be implemented by password protection (like KeePass) as well, since only the owner knows the password.
Nobody seems to have replied to that
Alternatively, the software could just scan your ID card's chip when you need it, or whatever it is that it does for first-time-use verification anyway. It needs not require your phone is locked down, locking you out of any control over tracking, installed apps, or reading the phone's storage and network traffic to merely see what it tracks about you. The phone can simply act as an NFC reader so that your ID can sign a challenge with an "over 18" flag included within the signed data
And that's if you want ubiquitous age verification in the first place. I find that u/raincole made a good point here that outlandish implementations have successfully shifted the discussion away from the aspect of whether ID-based checks must be widely performed: >>45361883
> so I urge [to vote a certain way], if you're a Swiss citizen
Is this post genuinely trying to add something to the thread, or a way to promote your agenda?