You might have lost that scrap of receipt that blew off your dash and had scrawled in-between cheetos grease "Left on Birminghamshire, Straight through the right, Hard left at the light, Bribe the bridge troll with a bit of danish, Second star to the right, Straight on till morning." But all it takes to get it back is a quick zoom on the screen of your $3000 SLR if you took the ten seconds to photograph it.
This is also great if you have any of a slew of new cheap p&s cameras that offer GPS tracing. You know the clock will be right (it's running of nuclear decay from outer space accurate enough to tell you where you are within three feet) and the camera will remember where you were (maybe not actually accurate to three feet, but close enough). The icing on the cake? There's video, and audio! Make a verbal note of what Nately's girlfriend's little sister you were watching said when she finally bit your hand and ran away from you in a city you've never been to before. Bonus points if you have video of her running away. You'll know it's south by southwest because lucky you, there's a camera built into your compass!
But seriously, there's limitless applications, especially with cameras, audio, and GPS built into almost everyone's cellphone these days. It's even handy for comparison shopping, where you can compare part numbers and prices from different stores when you go to buy a washing machine.
Stop drowning in scraps of paper and lost memories.
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