Last Updated: Sunday, July 14, 2013, 17:59
Lernstift is a regular pen with real ink, but inside is a special motion sensor and a small battery-powered Linux computer with a WiFi chip.
Last Updated: Tuesday, February 05, 2013, 15:48
A German company has designed a vibrating pen that is capable of picking errors in spelling or letter formation in real-time, by delivering a warning vibration to the writer`s hand.
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