From PARC, the mobile phone as tour guide
 

*Source: News.com (http://www.news.com/From-PARC%2C-the...ag=nefd.lede)*
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PALO ALTO, Calif.--Imagine you find yourself in a city you don't know very well.

Maybe you are on vacation, or on business travel, or just exploring an area of your own city you aren't familiar with. It's a sunny afternoon and you think to yourself, "Wouldn't it be nice to have a gelato?" Or a little later in the day, you find yourself hankering for a margarita, but you don't know where to get one.

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