We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Erin Roberts and Ben Keough Smartphone cameras have come a long way, but you ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Gordon Scott has been an active investor and ...

Abstract: Providing accurate and opportune information on people's activities and behaviors is one of the most important tasks in pervasive computing. Innumerable applications can be visualized, for ...