This page uses the HTML5 <canvas> element to generate a random string of letters and sybmols used as a 'Captcha' system to prevent bots and scripts from passing validation pages.

There is a case-sensitive validation and a non case-sensitive validation method. In some cases it may be better to not use case-sensitivity as some users may have trouble distinguishing certain capital and lower-case letters.

New codes can be generated 'on-the-fly' without needing to refresh the page. These new codes will replace the old ones in the validation checks.