Although the art of writing by hand seems a habit that is obsolete before the advance of electronic devices, a new invention could return the charm to wield a pen. While almost ubiquitous computers and mobile phones, allows avoiding embarrassing mistakes when typing, when it comes to writing with pen one is exposed. However, Lernstift (in German “pen to learn”) seems the dream of every parent or teacher: a pen that warns when the child makes a spelling mistake.
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