A new wireless device, called Invisible Tracck, can deter illegal logging by allowing authorities to track illegally cut trees in Brazil. Brazilian authorities will attach this small device onto valuable trees that might be targets for illegal loggers. If and when that tree is cut down and moved, the device will wake up and send a signal to authorities when it comes into range of a cellular network. Imagine a tree that calls for help!
Read more on this innovative tool at http://news.mongabay.com/2013/0124-hance-invisible-tracck.html#oCzhJHf5V1dklG3Q.99