GPS. The US government quit "fuzzing" GPS 2000-05-01, and GPS receivers were somewhat expensive until well after that. Games, email, texting, etc, are cool, but

GPS. The US government quit "fuzzing" GPS 2000-05-01, and GPS receivers were somewhat expensive until well after that. Games, email, texting, etc, are cool, but until you can keep time accurately, and use location services, smart phones are just toys.