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  • now smart pen that vibrates when you make spelling error

    Now, smart pen that vibrates when you make spelling error

    July 15, 2013 10:31 IST

    New Delhi, July 15: German inventors have developed a new hi-tech pen that gently vibrates every time it senses a spelling mistake or sloppy handwriting.Lernstift is a regular pen with real ink, but inside is