An example device or system and method includes accelerometer circuitry configured to generate at least one signal, a microphone configured to capture a voice of a person, a memory, and processing circuitry communicatively coupled to the accelerometer circuitry, the microphone, and the memory. The processing circuitry is configured to determine when the person is walking based on the at least one signal and determine when the person is talking based on the captured voice. The processing circuitry is configured to determine a risk of falling based on the determination of when the person is walking and the determination of when the person is talking.