A pen has been invented to correct mistakes when writing. The pen itself vibrates if you write something wrong. The pen works by a non-optical motion sensor which senses if you spell a word wrong. A pair of german inventors were the creatures at the company called learnlift, a German company. The pen holds one AA battery and a few circuit boards and it costs 1400 pounds. The pen has 2 functions orthography mode. It is used to recognise misspellings and is also calligraphy mode is used to point out flaws in the form of handwriting and eligibility to make it nearer.
By Ethan, Harry and Callum