The included app's well-designed interface shows an animation of your putts and displays a curve indicating the path of your stroke, which can be overlaid against that of a previous, model putt you've chosen.

ENGADGET: 3BaysGSA Putt: a Bluetooth golf gadget that puts eyes in your putter (hands on)

Global Hawk can pick out objects as small as a truck with its synthetic aperture radar, which uses the plane's flight path to simulate the curve of a radar dish several hundred meters long.

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