August 20, 2012 at 7:17PM Liquidware team crafts laser tripwire that tweets intruder alerts, keeps fake sharks at bay (video)
April 20, 2011 at 11:27AM Laser tripwire does Hollywood-style security on the cheap, precious jewels not included
January 5, 2010 at 3:28AM Twittering Arduino-powered laser tripwire captures trespassers -- digitally (video)
