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The Wikipedia page on CAPTCHA:

The tempusfugit.me.uk website does not use CAPTCHA. There is no information that has to be verified as submitted by the visitor. Such information would be robot access to forms on the site that attempt to inject malicious data.

When accessing the website using TOR the Google Tracking code seems to pickup the accesses from the TOR network when a page on tempusfugit.me.uk is accessed multiple times by changing the TOR Circuit.

CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is a type of security measure known as challenge-response authentication. CAPTCHA helps protect you from spam and password decryption by asking you to complete a simple test that proves you are human and not a computer trying to break into a password protected account.

A CAPTCHA test is made up of two simple parts: a randomly generated sequence of letters and/or numbers that appear as a distorted image, and a text box. To pass a the test and prove your human identity, simply type the characters you see in the image into the text box.

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CAPTCHA and TOR - how Google Analytics sees things

Not only does the CAPTCHA screen display when Google detect a suspect robot access to the tracking code the origin of a suscessful access quite oftenly displays as an access from Tehran, Iran!

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