The main attribute that Ballet cards and paper wallets have in common is that they are methods of non-electronic private key storage, but Ballet cards have several important advantages over traditional paper wallets:
- Ballet cards are waterproof and extremely durable; paper wallets are not. Laminating a paper wallet can improve its durability, but it would still be less durable than a Ballet card.
- Ballet cards are manufactured using a patented two-factor key generation process that is extremely secure; self-made paper wallets are vulnerable to malware, malicious code, and user error.
- Ballet two-factor private keys are concealed under a tamper-evident sticker and scratch-off material to ensure that no one has ever seen and copied the private key. Traditional paper wallets do not have that protection.
- Ballet cards have multicurrency support; traditional paper wallets do not.