Abstract: In recent years, CAPTCHA has been used as a panacea against HTTP-based ... The proposed framework was tested using botnets and real web traffic. Results show our frame work has a high ...

retina.js makes it easy to serve high-resolution images to devices with displays that support them. You can prepare images for as many levels of pixel density as you want and let retina.js dynamically ...

Give yourself a minute or two to scour the image before reading on for a hint ... After warming up your eyesight with this puzzle, see if you can find the happy elf hiding in Santa's workshop ...

Gergely Dudás has mastered the art of the hidden image puzzle. The Hungarian artist, who goes by the name Dudolf on the web, is famous for his Where's Waldo?-style brainteasers that embed ...

The text on the image reads, “Eye test: Count these eggs, is it 21 or 22?” This puzzle not only tests your counting skills but also highlights how our brains process overlapping objects ...