The importance and difficultly of asset tracking make it worthy of attention. We focus on data centers consisting of vertical racks where each rack may accommodate a variety of equipment. We describe an asset tracking system which automatically detects and identifies equipment within rack; has "pinpoint" accuracy, i.e., location resolution equals asset size; relays this information to possibly several management back-ends; includes a backend application that maintains a location history for all equipment; and uses a visualization tool to display both the current state and the history of deployment.The solution features a flexible architecture that simplifies the connection with both existing and future asset management applications. The architecture supports simple configuration, load balancing, and redundancy. Care has been taken to use widely recognized standards wherever possible.