Abstract: A pressure-sensing device includes an insert for insertion into a load-bearing article of clothing such as a shoe and a controller that receives analog electrical values representing an amount of load or pressure exerted on various portions of the insert. The controller incorporates an analog-to-digital converter (ADC), a processor, and a signaling unit. The ADC converts the analog electrical values into digital values at a precision associated with the ADC. If the response of the insert and ADC to load is nonlinear, a transformation function is determined that is inversely related to a curve representing that response. Application of the function to the ADC's digital outputs cancels out the nonlinearity.