Ability to auto-sign certain messages without manual approval

[lukecaan]

I am interested in making an app that can verify the public key of the current wallet to an external party. It functions by displaying a signed message via a QR code.

Unfortunately the UX I have envisioned would be drastically reduced by needing to manually sign the messages via the popup which displays in the standard message-signing process. I understand that enabling auto-signing for arbitrary messages would be dangerous, but I'm wondering if we could enable auto-signing for specific messages which are safe.

In my case I'd want to be able to access:

• a signed message containing the current wallet public key
• a signed message containing the current date

There might be other types of auto-signed messages which would be helpful for other use-cases too, so might be worth brainstorming other safe things that could come in handy