抄録
Recently, we see many portable device users walking, using eniail service and internet contents. Such an activity is dangerous because it makes users less alert to surrounding obstacles. Therefore we set out to develop a. portable Obstacle-Recognition-Support-Device that widely secures the walking safety of the users. We proposed. the estimation method of obstacle recognizability while using portable device based on the body characteristics and the concentration rate t.o the work. We showed the experimental results of an attention power of testees to the obstacles when the intensity of given warning was changed according to the working strength and obstacle recognizability.
