To ensure the authenticity of a document you have to sign the document with the certificate. I will show you how you can easily sign PDF document with the help of simple tool DigiSigner.
Virtual Hard Disk or VHD acts like a normal hard drive built into your computer. Cool thing is, it comes in a form of a single file so you can make a copy of it and virtually attach it to any other Windows computer.
The good folks at the Delft University of Technology came up with a dragonfly-like winged machine that can fly completely autonomously until the batteries allow.
According to Google, Android app downloads surpassed the 10 billion mark past weekend and to mark the celebration you can download premium apps for 10 cents.
First World War, also known as the World War I (WWI), was a global war centered in Europe that drew in all the world's economic great powers of that time.
U2 are an Irish rock band from Dublin. By many they are considered to be the best rock bend of all time. Go through the short quiz and build up your Dreevoo knowledge score.
