The Hedera Wallet provides a custom QR code, or shareable link to request transactions from other accounts.

To create a QR code or sharable link, tap the green "REQUEST" button on your Hedera Wallet home screen.

On the next screen, type in the amount you'd like to request, optionally add a note, and then tap either the "QR" or "SEND" buttons to generate a QR code or copy a sharable request link.