Type in the words that appear in the image below. You must get at least five of them right, in the correct order. Case doesn't matter.
There are currently 1000 images in this test. You can download a tar file containing the complete set, plus an answer key. (the previous set of 500 images is still online).
The test images were generated with a Perl script written by J Greely, and are placed in the public domain. The script is available, and is discussed in my weblog.