In a 2 of 3 multisig system, there are three private keys generated, and any two of them are required to authorize a transaction. This means that you can distribute the three private keys to different parties, and as long as any two of them are present, they can unlock the sha256 passkey. This adds an extra layer of security, as it means that even if one of the private keys is compromised, the attacker would still need to obtain at least one more private key to gain access. Does that clarify things for you, @0e23c07d?