Abstract
Smartphone was equipped with the function equal to a PC and has become an indispensable tool in the information society. In particular, many people are using it as entertainment tools such as video viewing, communication applications, and game applications while moving. There are many people using smartphone while walking on a platform or a street because they are enthusiastic about the application and cannot be interrupted. For this reason, many accidents have occurred due to the use smartphone while walking, and have been alerted not to use smartphone while walking. However, smartphone use while walking does not decrease at all. In this report, we examined the risk of using a smartphone while walking, based on changes in perception. In the experiment, we measured the effective visual field when standing without using a smartphone, standing with a smartphone, walking without using a smartphone, and walking with a smartphone. As the result, it was shown that the effective visual field was 45-56% narrower when using a smartphone than when not using a smartphone in both standing and walking. Thus, when using a smartphone, it is meant that it isn't possible to notice the changes in surrounding circumstances. Therefore, it was shown that using a smartphone while walking was dangerous.
