According to this MIT Technology Review article, researchers at the University of Washington have developed prototype devices that communicate using just ambient radio waves — no batteries needed. The devices achieve this trick by varying how much they reflect and absorb radio waves, and scavenge power from those same radio waves. Bandwidth is low — only about 1 kilobit per second — and range is currently less than 1 meter, though that can reportedly be extended to about 6 meters easily. By eliminating batteries, such devices can become significantly smaller and cheaper, and could appear in a wide variety of scenarios, from contactless payments to warehouse item tracking, plus the killer app of locating your glasses and keys. follow link
Open Files from BBEdit Subversion Log
When you use BBEdit's Subversion client capabilities to update the working copy of your Subversion repository, BBEdit always displays the Subversion.log file, showing any changes. If you want to work on one of the files that appears as being added or updated, just select the full pathname and choose File > Open Selection (or just hit Command-D). This trick should also work any time you see a pathname within a BBEdit document.
- ExtraBITS for 19 August 2013 (19 Aug 13)
Researchers Demo Devices Powered by TV Signals