A method and apparatus for configuring an electronic device for operation according to one of a plurality of product variants. For example, when certain mobile devices register with a particular network entity that services a particular target location, then such registration can be leveraged to indicate presence at the target location. Methods and machine-readable medium, and hardware apparatus are provided. The method may further comprise generating a ranked list of items based upon consumer relevance values, transmitting a ranked list of items to a consumer, andor re-ranking a ranked list of items based upon a merchant goal. 5 to 10 parts by weight of a polyol-based vulcanizing agent thereto. A zero dispersion wavelength is in a range between 1400 nanometers and 1650 nanometers.