Garisek is a personal password manager and sign-in helper. Michael Garisek runs it on his own server for his own accounts. It is not sold or offered to the public, and no sign-up is needed to read this page.
Garisek Autofill is a Chrome extension that fills in saved usernames and passwords on login pages, unlocked with Touch ID. Many sites also email a one-time sign-in or verification code. Garisek can find that code and fill it in for you, so you don't have to open your inbox and copy it by hand.
To fill those codes, Garisek asks Google for read-only access to Gmail (gmail.readonly) on each account you connect yourself. It looks only at messages from the last day, takes out the code, and shows the sender, subject, and code in the extension. It never sends, deletes, or changes email, and message contents are never stored or shared.
In the Garisek Autofill popover, open Connected mail and choose Connect a Google account. To remove access, choose Disconnect there, or revoke "Garisek" at myaccount.google.com/permissions.