MPC technology works by dividing the private key into several parts called “key shares”. Each of these shares is kept by a different party, and when it is necessary to sign a transaction, the holders of these shares work together to create a valid signature without the need to reunite the private keys.

At the time of the transaction, MPC allows the parties to collaborate on the signature process without revealing each other's input data. This ensures that data remains protected and keys are not exposed during the transaction process. This makes MPC a more secure solution than traditional private key storage methods.