I have a vB3 version ready (which is much easier to do I must say versus modifying the index.php file, making it more painless when upgrading vB).
So far it's only for those who don't do DB lookups. I can modify the rest as necessary.
All I did was stick the required code in the phpinclude_start template, and followed the rest of the directions. I also modified the custom template so it better goes with the vB3 template system. So far it's working great. But if you want it, let me know.
EDIT: I added the vB3 version...
https://vborg.vbsupport.ru/showthread.php?t=59672