Sure, but first let me tell you about some parental control software I
recently read about called SafeEyes that was highly reviewed by PC
Magazine, a resource inwhich I generally have a lot of confidence.
SafeEyes operates on an annual subscription, currently 49.95 per year.
TIF - known generically as a browser cache - was first created back in
the days of dialup, to store media content and scripts from web pages,
so if you went back to a web page you had previously visited you
wouldn't have to download them all over again. That's still its purpose,
even in these days of broadband. Today it's also used to cache
('temporarily store') software downloads - so you can continue to do
work while software is downloading - and large media files, like music
videos, so they'll play continuously without interruptions to download
additional bytes of data.
TIF has other uses too, but all along the same line: to cache items for
a better user experience. By its very definition, cached items are for
temporary use. Once the user is done with the cached files there's no
reason to hold onto them any longer, so they're available to be
overwritten without further ceremony.
Now you can see why TIF is a poor way to see where anyone's been on the
internet. For one thing, it's being overwritten on a more or less
continuous basis, based upon the settings in the browser. After all,
once you're done browsing you don't need the cached items, so why not
free up some disk space? Most protective software (antivirus,
antispyware, Windows' Disk Cleanup Wizard, etc.) will offer to delete
the cache for the sdame reason. And browsers can also be set to not
cache data from encrypted pages. This is a security measure.
Then consider this: Web pages appear to be a single presentation, but in
fact they are typically cobbled together from many different servers. So
let's say you kid went to the front page of the New York Times. Sounds
pretty respectable, right? Only the New York Times accepts advertising
from Orbitz, and maybe Orbitz is running a special on Bermuda vacations
and to help sell vacations their ad features a huge picture of a woman
in a barely-there bikini. That picture is in the browser's cache, but is
that why your kid was surfing the web?