Read in Discover magazine that all cell phones are required to be able to report their GPS coordinates, ostensibly for safety purposes, by the year 2005. That means tiny GPS transmitters will be ubiquitous. How else might we use that?

Read in Fast Company about inexpensive and miniscule metallic "tags" that carry information and can be scanned from a distance by radio receivers. Many companies are already using them for inventory management. How else might we use that?

Remember; dream, design, test, tweak, and try.