smart pen

 smart pen that vibrates when you make spelling error.

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.

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 languagdatabase