To backup a secret you need to choose recovery partners and get their public keys.
This will split your given secret into a set of encrypted backup pieces linked to your chosen partners and stored on the distributed web.
1
Public keys of recovery partners
You need to choose a set of contacts who you trust to be your recovery partners.
Each of them must have an Ethereum account.
Each of them must generate a public encryption key and send it to you by visiting → This page.
2
Identifier
A unique identifier for your secret that will be used by your recovery partners to find the share to recover.
Usually it is best to leave it as your Ethereum address but in some cases you may want to use a different identifier. → Read more
3
Secret
A secret could be anything. Think about it as sensitive data such as your gpg private key, the password to your encrypted harddrive, or your Ethereum seed phrase.