Hi Damilola,

If the cold wallet is a paper wallet, then the user might have to connect to a hot wallet to carry out any transaction. They can manually input their private key into the hot wallet or import it (if the hot wallet has this feature) by scanning the QR code or seed phrase in the paper wallet.

However, if is a hardware wallet, the wallet would be connected to a computer or mobile device (depending on the design) which has the software of the wallet manufacturer installed. This software will then authenticate the hardware wallet and perform transactions.