Eliminating My Wallet

I have been trying to minimize and eventually eliminate my wallet and keys for a couple of years.  I recently tried to scan all my membership cards into a mobile app.  It made my wallet very thin, but there was a problem.  Retail locations can not scan my phone and cashiers have to manual type my number every time, which completely negates any convenience from eliminating my wallet.

As a millennial trying to eliminate my wallet, I want POS systems to be able to scan my digitized membership cards, so the front line staff doesn’t have to manually enter my number.

-Verify the number is correct in the POS system
-Verify that the process can be completed in less than 2 seconds