Time-based One-time Password (TOTP) is an algorithm that generates a one-time password (OTP) using the current time. Refer to Google Authenticator | Key URI format for more information.
A Secret: The secret key encoded in the QR code during authenticator setup. It’s an arbitrary key value encoded in Base32, for example: BVDRSBXQB2ZEL5HE. Refer to Google Authenticator Secret for more information.
A Label: The identifier for the account. It contains an account name as a URI-encoded string. You can include prefixes to identify the provider or service managing the account. If you use prefixes, use a literal or url-encoded colon to separate the issuer prefix and the account name, for example: GitHub:john-doe. Refer to Google Authenticator Label for more information.