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Smartphone touch-screen analysis tests finger fidelity

Smartphone touch-screen analysis tests finger fidelity
by Kyle VanHemert

Touch-screen comparison between the iPhone, HTC Droid Eris, Motorola
Droid, and Nexus One. Click for larger version.
(Credit: Moto Development Labs)

Moto Development Labs devised a simple method of analyzing capacitive
touch screens using drawing programs. They put the iPhone, the Nexus
One, the Droid, and the Droid Eris through the paces and proved not
all touch screens are created equal.

Using only your fingers and a drawing app, Moto shows how you can test
out the accuracy of your smartphone's touch screen. The test is
simple: draw some slow, steady lines across the screen with your
finger. If they're smooth and straight, your touch screen is tracking
with relative accuracy. If they're wavy or jagged, your phone might
not be giving your fingers the attention they deserve.

Moto's test showed the iPhone tracking the most accurately of the
four, with smooth, straight lines. The Motorola Droid fared worst of
the bunch, its crossing lines tracking so jaggedly that the screen
looked like a jigsaw puzzle. The Eris and the Nexus One landed
somewhere in between.

If jagged lines are the symptoms of a subpar touch screen, Moto
suggests that the affliction can be any combination of too large a
sensor, too low a touch-sampling rate, or too inaccurate an algorithm.
[Moto Development Labs - Thanks Sabrina]

DIY Touchscreen Analysis from Moto Development Group on Vimeo.

This story originally appeared on Gizmodo.