I&#x27;ve seen many implementations of this exact thing, the basic ones are just sha1 or sha2(master + website domain) which generates a unique &quot;password&quot; for each site. This is just another implementation of the same idea. I&#x27;ve seen a few releases of simple scripts that do this for you as well, some work as bookmarklets, browser extensions, or single-page app websites.<p>Visionary being a Python script I think makes it less portable, harder to use for average users, and definitely not mobile-device friendly.