Photos: High-tech survival tools Summary: There are plenty of high-tech devices to be added to a good disaster survival kit. By Bill Detwiler | July 19, 2006 -- 11:36 GMT (04:36 PDT) Follow @billdetwiler Previous | Next Image 4 of 5 Prototype of a nanotechnology water filter for residential use. Topic: Censorship Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.