*IoT-Based Route Guidance Technology for the Visually Impaired in Indoor Area DOI: http://dx.doi.org/10.5772/intechopen.105549*

impaired persons, and **Figure 15(b)** shows the results of the user satisfaction survey before and after the application of the development system of this chapter. As shown in the figure, the user satisfaction ratio before the application of the development system was 6.81 out of 10, but after using it, it was analyzed to be 8.81, which was an improvement of about 19.4%, confirming that the application effect of the proposed system was very good. In addition, the visually impaired people were reluctant to use railroad stations due to difficulties in finding routes when using them, but if the system of this chapter is applied to the field, a majority opinion that it would be very useful and helpful when moving at an actual station through a simulation walking through this app before going to the station was suggested.
