In Brazil, Trees To Call For Help If Illegally Felled
Damien1972 writes "The Brazilian government has begun fixing trees in the Amazon rainforest with a wireless device, known as Invisible Tracck, which will allow trees to contact authorities once they are felled and moved. Here's how it works: Brazilian authorities fix the Invisible Tracck onto a tree. An illegal logger cuts down the tree and puts it onto a truck for removal, unaware that they are carrying a tracking device. Once Invisible Tracck comes within 20 miles (32 kilometers) of a cellular network it will 'wake up' and alert authorities."
Why do they need to be recharged in a year? Simply checking orientation with a microcontroller in deep sleep the rest of the time shouldn't take that much power.
Anything that raises the hassle level to untracably do illegal/harmful activity will probably either catch or deter a reasonable chunk of the would-be criminals. We live with knowing that the locks we use in our homes could be picked, and if someone *really* wanted to take the time and the risk or spend the money, they could probably get in in various ways, just like we never achieve 100% safety from other crimes. That doesn't mean our safety measures are worthless though.
For every problem, there is at least one solution that is simple, neat, and wrong.
Brazil has to make up its mind, are the trees a natural resource, or national treasure? Trees are not immortal, they get old and die. Controlled harvesting can support the population and the forest. It's over two million square miles, does all of it have to remain pristine?