Multisig

Multisig wallets require more than one signature to approve a transaction. A 2-of-3 setup, for example, means any two of three keyholders must agree before funds move.

Teams, DAOs, and treasuries use multisig through tools like Safe (formerly Gnosis Safe) to prevent a single compromised key from draining everything. Shared control adds coordination overhead but removes single-point-of-failure risk.

Threshold signatures and MPC wallets pursue similar goals with different cryptography, but the user-facing idea is the same: no single person should unilaterally control shared funds.