Upon a driver of a vehicle setting a target parking position, a parking assist system calculates a recommended parking start position which the vehicle can reach with a current steering angle of the vehicle unchanged and from which the vehicle can reach the parking target position with a constant steering angle. In an example method, a first media metering device associated with a media presentation device monitors for a presence of one or more other media metering devices and a monitoring operation of the first media metering device is halted based on the presence of the one or more other media metering devices. Also provided is a coated nanocrystalline phosphor prepared by bonding modified organic molecules to the nanocrystalline phosphor andor coating the nanocrystalline phosphor with the modified organic molecules.