Lernstift Pen: A Linux Powered Pen that won't let you Make Errors: As a technology is improving in all aspects here today German developers have invented a new pen named as the "Lernstift Pen". This new Linux Powered Pen will gently vibrate every time when it senses a sloppy handwriting or spelling mistake. http://geeks9.com/lernstift-pen-that-wont-let-you-make-errors/
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