Going even farther, I'd love it if full receipts passed through the credit card system. Yes, my credit card company would mine the data, but replacing "$20 at FOOCORP on 11/23" with "$20 at FOOCORP on 11/23 <click for receipt>" would be well worth it to me.
(I wrote up something advocating this in https://www.jefftk.com/p/attach-receipts-to-credit-card-tran...)