While Thinfi provides the lock, you are responsible for the key. To ensure your links remain truly secure, follow these industry-standard password security tips from EBC Group :
Go to Thinfi.com and enter your long URL and desired password. Thinfi.com Password
Thinfi will output a unique, shortened link. Copy this link and distribute it via email, chat, or social media alongside the password (preferably using a separate communication channel). The Technical Framework: How Secure is Thinfi? While Thinfi provides the lock, you are responsible