To request bitcoin, you can share a

- (Legacy/Script/SegWit/Taproot) address

- Reusable payment code

- Silent payments address

- Lightning invoice

- Lightning offer

- Lightning address

- Human-readable address

As text, BIP21 URI or QR Code. Or ask for a Fedimint/Cashu token.

Probs overlooking some other options (including bad ones like sharing xpubs) and details, but either way this is a lot to wrangle in UX and for users to have a general framework for. Let's see what solutions we converge on.