It's the same as using your private SSH key to sign in to your servers from different devices, you can choose to generate a new pair of private/public key or ju

It's the same as using your private SSH key to sign in to your servers from different devices, you can choose to generate a new pair of private/public key or just copy your private key from old device to new ones. But reuse private keys have it disadvantages: * You have to copy the key manually * When a device is compromised, you have to replace the key on all of your other devices