We still believe that the absolute largest roadblock to economic activity using cryptocurrency is the barrier to entry in user experience (followed closely by financial instrument packaging and bank buy-in). And in our write-up of Samsung's crypto phone gamble, we stressed that there should be no difference -- from the customer view -- in using a credit card in a digital wallet, and using a self-custodied digital asset. Well it seems the folks over at Coinbase were paying attention, as last week the crypto trading website unveiled a Visa debit card that lets users buy things with fiat money converted from cryptocurrency stored in their online Coinbase wallets. Users can take advantage of the full neobank treatment with Coinbase's app providing nifty visualisations on your spending behaviour, and security controls such as disabling the card if it gets lost or stolen. The card will only be available in the UK, with a wider European release to come later this year. UK users can expect to be charged a 1 percent transaction fee and a 1.49 percent conversion fee, totalling 2.49 percent for every transaction using the card (2.69 percent in Europe and 5.49 percent elsewhere). These fees seem high when we compare them to the C2B credit card transaction fees for US-based retail and online merchants at 2.2 percent and 2.52 percent respectively, per $100 transaction -- as outlined in our latest Payments keystone report. The big question is -- is this new? and our answer is not really. Revolut, amongst others, has offered the ability to make transactions using cryptocurrency for well over a year, however, the merchant doesn't actually receive bitcoin, rather the app does a conversion back to fiat to make payment. From a transaction standpoint, we see Coinbase as no different, as they are simply taking exchange custodied wallet holdings and converting them at the spot rate to make payments. Cryptocurrency-native transactions are difficult because the distributed ledger (Blockchain) requires each transaction be verified through network consensus before it is finalized, which for Bitcoin is 10 minutes -- imagine waiting 10 minutes for the credit card machine to print the transaction slip?. What is notable about Coinbase's card is that it helps cryptocurrency adoption by assimilating one's crypto holdings at Coinbase with their fiat holdings at a bank, promoting a better user experience than before.