Now, smart pen that vibrates when you make spelling error:
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 a special motion sensor and a small battery-powered Linux computer with a WiFi chip.
Together those parts allow the pen to recognise specific movements, letter shapes and know a wide assortment of words. If it senses bad letter formation or messy handwriting, it will vibrate, 'ABC News' reported.
Users can choose between two functions: Calligraphy Mode - pointing out flaws of form and legibility or Orthography Mode - recognising words and comparing the word to a language database. If the word isn't recognised it will vibrate, according to Daniel Kaesmacher, the 33-year-old co-founder of Lernstift from Munich.
The other co-founder Falk Wolsky, 36, had the idea for the pen last year while his 10-year-old son was doing his homework.
"His son had been struggling with his work and staying focused and Falk thought there should be a pen that gives him some sort of signal so he stays focused," Kaesmacher said.
After a year and a half in development, the founders have now brought Lernstift to Kickstarter to begin raising money and gauging interest.
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