Foot Measurement Using a Smartphone App and Evaluation of Fit Satisfaction with Custom-Handmade Footwear

We surveyed footwear fit satisfaction to inform the development of a custom-handmade footwear ordering system with foot measurement via augmented reality (AR) virtual fitting available to consumers on-tact (non-face-to-face) in a smartphone app. The participants included 300 Sookmyung Women's University students and female employees. The first experiment comprised foot measurement and AR virtual fitting via the app and a survey of respondents' ready-made footwear purchases and fit satisfaction evaluations. In the second experiment, 50 participants were randomly selected to wear custom handmade footwear made using the collected measurement data The study's findings revealed that the X value of the foot model accuracy for the virtual wearing function in the form of footwear was 0.0 mm, and the level of satisfaction was high. The fit of the custom handmade footwear made with the subjects' foot measurement data obtained through the foot measurement app showed a statistically significant difference of p < .05 compared to the ready-made footwear. The foot measurement app's accuracy was confirmed through certification within the standard tolerance ≤ ±1 mm range, with a maximum average difference of 2 mm between the existing value and the 3D scanning value presented in ISO 20685-1.