Keyboard question

wonderboy1953

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195
Are any keyboards made whose keys are LCD display? The purpose to this is to transform the character set into another (e.g. uppercase characters into smallcase characters) or to have more special characters you can type with.
 
Are there any keyboards out there that utilize the E-ink display? Much in the same way that the Alias 2 phone's keyboard worked? If not, I'm seriously surprised.
 
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