GPS Accuracy Aided With Stroke of Pen

Global positioning devices used to steer cars, fly planes or find missing skiers will be given pinpoint accuracy previously available only to the military under an order President Clinton signed in Washington. Until now, civilians using a U.S.-built network of satellites got a less accurate reading out of fear that potential enemies could use the system to target missiles. The U.S. will stop jamming the signal for civilian users but can still selectively block the Global Positioning System over any given region.