Chapter 6 Theft, Scams, and Storage. Debit cards appear to still be working. Further, no banks or institution offers solutions to storing the Bitcoin keys that are a must-have when accessing the Bitcoin address that contains specifics such as BTC balance, transaction encryptions, and other on-platform activities. One reason for this is because of the irreversible nature of Bitcoin. Hardware wallets are stored in portable and detachable computer hardware parts such as a USB stick, or external hard drive. After this you can start purchasing Bitcoins anytime instantly using your added debit or credit card.