Digital pen that check spelling mistakes

German inventors have made a digital pen for checking spelling mistakes. The Lernstift, which means learning pen in German, recognizes the writing movement using a built-in sensor. This sensor checks the shape of the letters in order to recognize words and alerts on mistakes. The good thing about this pen is that it has a built-in Wi-Fi which can be used to connect to a smartphone and PC.

Digital pens are available in the market. Unlike the pens available in the market which use optical sensors to trace writing movements, this pen has built-in and technology.