An anonymous reader writes "Electronic devices are built to last, which make them very reliable. However, if during a hostile situation such a device has to be left behind or gets dropped, it will continue to function and could end up giving the enemy an advantage. With that in mind, DARPA has set about creating electronics that work for as long as necessary, but can be destroyed at a moment's notice. The project is called Vanishing Programmable Resources (VAPR). Its main aim is to develop so-called transient electronics that are capable of dissolving completely, or at the very least to the point where they no longer function. Destroying a VAPR device should be as easy as sending a signal to it or placing the device within certain conditions e.g. extreme heat or cold, that triggers the rapid destruction process."