Magnetically Driven Pen

MagPen is a magnetically driven pen interface that works both on and around mobile devices. The device introduces a new vocabulary of gestures and techniques that redefine the way we use our current standard capacitive stylus. With this new pen we can explore ranges like detecting the orientation the stylus is pointing to, selecting colors using locations beyond the screen boundaries and more.

MagPen recognizing different spinning gestures associated with different actions, it even infers the pressure applied to the pen, and uniquely identifies different pens associated with different operational modes.

As the designer explains, These techniques are achieved using commonly available smartphones that sense and analyze the magnetic field produced by a permanent magnet embedded in a standard capacitive stylus. This paper explores how magnets can be used to expand the design space of current pen interaction, and proposes a new technology to achieve such results.

Designer: SungJae Hwang

[youtube: 600 451]


  • J.cob says:

    WOW. This is really great idea.

  • J says:

    Did you look through earlier patents? Most of the ideas are invented by Deutsche Telecom 5 years ago. Some of them are published in conferences in 2012 which is earlier than your patent application.

  • Jay says:

    I think it is totally different from Deutsche Telecom. The important novelty of this work is the way of using a pen and its algoritm.

  • Thanks for the good comment.

    We already went over earlier patents and papers. Our paper already cited previous papers you mentioned and stated differences against them. As you said, a number of input techniques using magnetism have been introduced in various form (e.g., watch, finger ring, wrist-mounted one, and etc). There’s even a relevant patent filed 10 years ago. However, there are no stylus that is augmented by a permanent magnet and no explorations of the idea in user experience aspects. We believed that’s one of the novelty of this work.

    Thanks! 🙂

  • For your interest, I show you another application using this technique.


  • Paul says:

    where can I buy this?

  • Deniel says:

    Love it!

Comments are closed.