ADVERTISEMENT turns “almost any cell phone into a fully functioning GPS” navigator with a simple download. Its software can accurately track “distance, elevation, and running, hiking, and biking speeds.” Service costs $5.99 a month or $1.99 a day. offers software for your cell phone that “calls up 2-D and 3-D maps with pinpoint-accurate voice directions.” A one-time ­download costs a little more than $200. lets mobile users “share their locations with their friends” via Google Maps. That sounds Orwellian, but Latitude is “completely opt-in”: Users can “choose who gets access and what level of information they can see.”

Source: Outside and The New York Times