Have you ever wanted to write a letter to someone but wanted to make sure no one else reads it? Would you like to make any letter or picture only visible by black light? The tutorial below presents a way to print with “invisible” ink, so you could create some spy-like documents…

With so many different digital cameras available in the market, is it surprising to hear that HP decided to step out of the digital cameras scene?
Hewlett Packard used to be ranked third in digital cameras market leaders, but that was back in 2001…