Improv Electronics shows off color-changing iPod touch cases, details upcoming Boogie Board 'Recorder'

We haven't heard much from Improv Electronics since it first introduced its reflective LCD-equipped Boogie Board "writing tablet" last January, but the company's now back at CES with some new products and some new promises. The first of those is a new iPod touch case based on the same reflective (or "Reflex") display technology, which allows the case to change colors without the need for any power -- the company says it'll last "several years" before it finally dies out. Look for those to

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