Screaming Cells Phones...

A new phone security system may work to halt a spiraling rise in phone theft in the UK. The system sets off a high pitch scream, permanently locks the handset and wipes all data if reported stolen. The Remote XT technology, designed to make phones unusable and therefore worthless if they are stolen, works by installing software onto the operating system of the device that can be activated via a call to a call center once users realize their phone has been stolen or lost. The phone is then remotely disabled, all the data held on it is wiped and a high−pitched screech is triggered.

According to UK government statistics, mobile phone theft has risen 190 percent in recent years, with one third of all UK robberies now solely involving mobile phones. The software currently works only on
"smart phones" that run operating systems such as Symbian or
Windows Mobile. But it is expected to be suitable for the majority of phones within two years.
Source: http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9003788&intsrc=news_ts_head