Systems are provided for providing location information associated with a mobile device. Each of the matching layer sections comprises a spring layer comprising a first material and a mass layer comprising a second material that is different than the first material. In addition, a fence member may be assembled with or formed on the test substrate to align and receive a semiconductor device and, thereby, to facilitate assembly of the semiconductor device with the test substrate. The retention device includes a first configuration in which the overall dimensions of the retention device are larger than at least one dimension of the dental site.