What is a secret key?
BlockSurvey uses Blockstack blockchain for Account / Identity Management.
The account you create is an Decentralized Identity(DID) which gets anchored in Bitcoin's blockchain through Blockstack.
Secret key is a set of 12 words which proves your ownership of our account / identity. It is used to access your identity on the Blockstack's blockchain.
Words for example:
applied binge crisp pictorial fiery
dancing agreeable frogs light finish ping apple