On Wednesday, scientists in Mexico City discovered a tiny tree frog, completely preserved in amber, that is estimated to have lived approximately 25 million years ago. Mirroring somewhat the story of Jurrasic Park, the frog is entirely preserved by its amber casing, and was discovered by a miner who later sold it to a private [...]
Last month we heard news that Audioslave band members (formerly of Rage Against the Machine) were reuniting for a one time concert with former frontman Zach de la Rocha at this year’s Coachella festival. The story continues to get interesting though as current Audioslave frontman, Chris Cornell, announced today that he will be leaving the group due to “irresolvable [...]
The trial testing phase of a new retinal prosthesis is about to begin following the preliminary success of a prototype. The prototype has reportedly enabled six different people to regain their sight where they previously had lost it entirely. Within a few weeks of the new prosthesis, all the patients could detect light, identify objects, [...]
It seems like every few months an article comes out highlighting the U.S. failure to keep up in the global broadband race. While the same excuses continue to be made for why the problem is happening (country size, lack of need, greedy corporations, to much legacy infrastructure), the fact of the matter is the U.S. [...]
A coalition of U.S. software, music, and movie producers has urged the Bush administration to add Canada to the countries blacklist of intellectual property villains. The list is currently populated with countries such as China, Russia, and Belize. Citing Canada’s so-called chronic failure to modernize its copyright regime, the group contends that Canada has developed [...]
Canadian manufacturer D-Wave Systems Inc., announced today their self proclaimed, “world’s first commercially viable quantum computer.” The rollout event took place at the Computer History Museum in Mountain View, California and was hailed as a big step toward the age of quantum computing. The system is only designed to solve Sudoku puzzles and experts say [...]
Ever wonder about what gifts to give on Valentine’s Day or what things to do? Ever wish you just had a nice list of recommendations? Ever wish you didn’t have to go to 10 different Top 10 Lists just to compile the information your sad un-romantic self needs on this day of the year? Well, [...]
Tutorial: improving security with a PHP Captcha
by stark in Programming, Technology, Web Design
February 17, 2007 · 6 Comments
Although you might not know it by the name, a captcha is one of those little boxes you see, more and more lately, that ask you to type in a random code to verify that you are a human being and not a robot. There are many different varieties, but the basic idea is an image [...]
Tags: captcha, commenting, php, programming, robot-blocking, security, spam-blocking, spamming, technology, tutorial, verification, Web-Design