A computer system comprising a Web site and/or a cloud array of computers wherein the system is configured to have a connection to a smartphone or other mobile computer device and the system is configured to use the device to control a configuration of computer-controlled footwear structural elements located in footwear soles of a device user, and sensors located in footwear soles of the device user and a sensor including a gyroscope and/or an accelerometer in the device. The system is further configured to control the configuration of footwear structural elements and sensors by using the device and the connection to: transmit data to the system for storage and/or shared or independent processing and/or analysis: process data received from the sensors located in footwear soles of the device user and the sensor in the device; and use the processed data to alter a configuration of the footwear structural elements.