A modified fiber interlink forms an optical link between multiple channel waveguides to be mated. The diagnostic test unit utilizes a charger combined with a rapidly variable load. The teeth are designed and arranged to be unset and to be symmetric with respect to the longitudinal center plane. Furthermore, the PPS receiver and the SPS receiver are communicatively coupled such that the PPS data portion from the PPS receiver is cross-validated with the SPS data portion from the SPS receiver thereby corroborating the accuracy of the positioning signal. For example, one embodiment of the present invention provides a method for translating point-of-sale loyalty requests by using a loyalty request to create a translated loyalty request that is compatible with a loyalty host and by using the loyalty response to create a translated loyalty response that is compatible with the loyalty client.