Amid the wealth of information streaming out of websites, banner ads get little of users' attention. For website operators that depend on advertising revenues and online retailers, that's not good news. So could they make…
A contact lens that harvests radio waves to power an LED is paving the way for a new kind of display. The lens is a prototype of a device that could display information beamed from…
Verifying your identity generally comes down to entering one "key" that only you can provide – be it a password, credit card number or RFID tag. That's not good enough, according to a new proposal,…
Virtual globes such as Google Earth or Microsoft Visual Earth provide great bird's-eye views of urban landscapes. But those streets are empty, transforming the world's cities into ghost towns. Now a system that can draw…