The LA Times Travel Section has been focusing lately on some cool gear to help keep you and your valuables safe while on the road.
One of the more interesting is the Xscream. This carabiner-like device is really nothing more than a portable yell-box. It clips easily on a purse or backpacker and when danger approaches one simply presses the button and out comes a 120-decibel scream. This will either frighten the thief off, or irritate him so badly he will beat you until you start screaming equally as loud.