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 language database.
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