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  • vol7ron - Monday, February 14, 2011 - link

    This is pretty neat, I suspect that it doesn't work so well for sensitivity. I'd like to see this applied for drawing applications. Getting the feedback from paper is much better than drawing on a track pad.
  • Murloc - Monday, February 14, 2011 - link

    this thing probably can't detect pressure on the paper so I don't think it would be that useful.

    It's nice to take notes on paper (or do drawings to be added to digital notes you're taking with any device) and have them in digital format immediately though.
  • shadowofthesun - Monday, February 14, 2011 - link

    I don't see why not- if the ultrasonic waves vary in both amplitude and frequency, you can store alot of analog data in that wave, including (presumably) pressure from the pen tip
  • wifiwolf - Monday, February 14, 2011 - link

    Isn't a mechanical wave less power effective than a electromagnetic one like Bluetooth for instance?
  • FaaR - Tuesday, February 15, 2011 - link

    It might consume less power than bluetooth due to much less complicated tech (no need for electronics to run an entire BT networking stack, just a set of dumb signal generators and piezoelectric speakers or somesuch), but the range is bloody limited at only 30 cm(ish), and what about crowded noisy environs, or heck, multiple people in the vicinity using these gadgets? BT would indeed be much more resilient.
  • Narcofis - Tuesday, February 15, 2011 - link

    I'm sure your dog is not going to like you when you use that pen. Especially with the 25khz range. Could be useful to chase them away. :P
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  • lili75 - Tuesday, March 22, 2011 - link

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