Just saw an ad for some kinda compact business card case style wallet stating "this could be the last wallet you ever need to buy".

Nah, too late mate.

It's been a few years since I last carried a wallet. Now days it's just the phone (used for most payments), two credit cards on different networks, and an emergency 20 quid note (given inflation that probably needs upgrading.)

I'll be glad of the day I can embed the lot of it. NFC fingertips, and eyeball embedded display? Sign me up.