Bio
Tristan Walker
Tristan Walker is the Director of Business Development for Foursquare, a mobile social application that mixes social, locative and gaming elements to encourage users to explore cities in which they live or visit and reward them for doing so. He has lead partnership efforts with various media entities and large retailers, including Bravo, MTV, CNN, New York Times, NBA and Starbucks. Walker was also featured in The Hollywood Reporter's Digital Power Top 50 list for 2010.
Walker holds a B.A. degree in Economics from Stony Brook University, where he graduated as valedictorian, and an MBA from the Stanford University Graduate School of Business.
Encyclopædia Britannica Article
- cell(ular) phone
Wireless telephone that permits telecommunication within a defined area that may include hundreds of square miles, using radio waves in the 800900 megahertz (MHz) band. To implement a cell-phone system, a geographic area is broken into smaller areas, or cells, usually mapped as uniform hexagrams but in fact overlapping and irregularly shaped. Each cell is equipped with a low-powered radio transmitter and receiver that permit propagation of signals among cell-phone users.
- cell(ular) phone on britannica.com
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