Smart Dew

Researchers at Tel Aviv University have developed a new security system called "Smart Dew" that consists of tiny wireless sensors, each the size of a dewdrop, that can be scattered outdoors or indoors to detect intruders over wide areas in a nearly invisible and cost-effective way. The Smart Dew sensors communicate wirelessly to detect people, vehicles, and other objects, and can be programmed to monitor different conditions like temperature or vibrations to provide security for properties like farms or national borders that would be difficult to guard otherwise. Each sensor costs 25 cents and together they form a covert monitoring network that would be nearly impossible for an intruder to notice or disable.