- Offline verification services.
Possible, but there are still chances that someone who work to these sectors can make a copy of your data with a work of phone's camera. Maybe not your photo ID, but your basic info can still be used to trick you especially to those who want to scam you, or hack your bank accounts.
- Registration without email or phone].
There's no such thing here, especially in my area, even the basic requirement in schools as parents needs your phone contact, how much more on those info verification, they always needs contact info, so either email or phone will always be a requirement. Not unless you input a wrong email or phone there.