Wait -- wait -- it costs $200, uses an accelerometer, has only one button (er - switch), is focused on touch sensitivity, and is being reviewed at Gizmodo? Are we certain this was not made by Apple?
Using an accelerometer to know what you are brushing is akin to using a compass to know what street you are on. Unless I am just plain ignorant (don't answer that) I have to assume there were some fancy-pants statistics folks involved in this tech genius.
"We have found that 12.6% of the time that a toothbrush is being held at a 36.8% slope that a bicuspid is being impacted at 33.1% force at 746 feet above sea level."
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06/05/09
...wait...
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See, sharper image would have the solar powered lazer plaque zapper, rather than an actual *ugh* brush...this is SOOOOOOO 2008.
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"We have found that 12.6% of the time that a toothbrush is being held at a 36.8% slope that a bicuspid is being impacted at 33.1% force at 746 feet above sea level."