The literature of cryptography has a curious history. Secrecy, of course, has always played a central role, but until the First World War, important...
Over the past ten years there has been a revolution in the devel- opment and acceptance of mobile products. In that period, cel- lular telephony and c...
Ever since ancient times, people continuously have devised new techniques and technologies for communicating their ideas, needs, and desires to others...
The unguided transmission of information using electromagnetic waves at radio frequency (RF) is often referred to as wireless communications, the firs...
Static electricity is the most ancient form of electricity known to humans. More than 2000 years ago, the Greeks recognized the attraction between cer...
