Drunkard's Walk Forums

http://www.rawstory.com/rs/2012/11/22/s ... for-women/

The Saudi government is apparently now (and has been, it seems, for some time) tracking women at the airports when they leave the country... and then send a text alert to their father, husband, or other male 'guardian'. 
--
Sucrose Octanitrate.
Proof positive that with sufficient motivation, you can make anything explode.

Here in the US you have to pay for that sort of thing, but in return your ability to monitor your slaves is much greater:

PhoneSheriff
FlexiSPY