http://www.kk.org/quantifiedself/2010/05/eric-boyd-and-his-haptic-compa.php
'Here is Eric Boyd's talk about the device he built called North Paw - a haptic compass anklet that continuously vibrates in the direction of North. It's a project of Sensebridge, a group of hackers that are trying to "make the invisible visible".'
The technology itself is pretty interesting; see also http://www.wired.com/wired/archive/15.04/esp.html
To whom it may concern:
This thread is for the discussion of Less Wrong topics that have not appeared in recent posts. If a discussion gets unwieldy, celebrate by turning it into a top-level post.
(After the critical success of part II, and the strong box office sales of part III in spite of mixed reviews, will part IV finally see the June Open Thread jump the shark?)