Moon is an app that creates virtual Prepaid Visa Cards. The cards can be loaded with cryptocurrency.
The cryptocurrency is converted to USD the moment it’s loaded to the card and funds are immediately available to spend wherever Visa debit cards are accepted online in the US.
Each card can only be used once, so even if your payment information is leaked, there is no risk to the security of your coins.
Virtual cards are just like regular cards, except there is no physical plastic. By entering virtual card details where you would normally input your credit or debit card details, you can complete purchases without giving out your personal card details.
You can fund a virtual card with a Coinbase account or a Lightning Network enabled wallet.