An example electronic user device includes memory; instructions; and processor circuitry to execute the instructions to identify a stylus grip pattern indicative of a grip of a user on a stylus based on signal data corresponding to signals output by a sensor of the stylus; select one of a first stylus mode or a second stylus mode for the stylus based on the stylus grip pattern; interpret an interaction between the stylus and the electronic user device based on the selected one of the first stylus mode or the second stylus mode; and cause the electronic user device to respond to the interaction.