One of the most difficult things for fire rescuers is to locate people or animals through the smoke and save them in due time. Until now, fire rescuers have used thermal sensors. The problem is that, although these devices can see through smoke, in presence of flames their image gets confused and is actually useless.
A team of italian scientists has found a new method to work around this limitation, which is based on digital holography. The result are 3D images. By now, the developers are working on making the device smaller. It could also be mounted on location such tunnels, where seeing through flames could be important in case of emergency.