Thinfi.com is a URL shortening service that allows users to create password-protected links. If you are trying to access a link that starts with thinfi.com/
: If it isn't listed, you may need to comment on the post to ask for the password. Creating Your Own Password-Protected Link If you want to use Thinfi to protect your own links: Thinfi.com Paste your long URL into the provided field. Thinfi.com Password