The tech history books are littered with the corpses of products that died on the vine. But there's a special sort of gadget or technology that on the face of it looks like it has what it ...
This file photo shows the prototype model of a chair robot called "WL-16 II" developed at Waseda University in Tokyo. The two-legged robot is aimed at enabling people in wheelchairs to go up steps or move heavy goods on uneven land.
Caption by: Bill Detwiler