We first heard about Lernstift in February 2013, when the company revealed an early prototype and began seeking investors. After the press attention the idea received at that time, the company raised US$200,000 from a mix of individual and corporate backers. It has now turned to Kickstarter to raise an additional £120,000 (US$180,000).
The idea for Lernstift was hatched when Wolsky's wife was helping their son do his homework and discovered he was making mistakes without her noticing. After she had expressed her wish for "a pen that points out errors right when he makes them," Wolsky decided to create such a device. The result is a digital pen that gently vibrates when it detects that a mistake has been made.