抄録
This study clarifies that the sense of touch with white cane can recognize the change of unevenness more sensitive htan treads. It is known by the experiment that the degree of recognition of the change of unevenness, hardness and slippeiness are compared by two type of stimulus from the floor, stimulus sent to a hand through white cane and stimulus sent to treads through footwear. This means it is so useful to change the unevenness of floor to inform something to blind people without providing any conscious to ordinary people. However, it is difficult to know the change of slipperiness in sense of touch with white cane so that dangerous case can be caused without giving any notice if they get into the slippery zone.