A display system comprises an electro-optic layer having first and second opposite major surfaces, a first electrode proximate the first surface of the electro-optic layer, and an electrode array. The polymer can be provided by introducing a ketoximesilane compound into a system that includes carbanionic polymer. The wireless communication device communicates, via the channel, with a device separate from the wireless communication device. The method may further include measuring a third signal from a third winding of the unenergized motor, and determining whether the motor is rotating may include determining that the motor is not rotating if the first, second, and third signals are equal. For example, the first signal may be generated to have a higher resolution than the second signal for detecting substantially lower levels of the scattered light.