A system comprising a piece of oilfield equipment, an identifier assembly and a reader. The piece of oilfield equipment has an exterior surface. The identifier assembly comprises an identification tag storing a unique identifier. The identification tag is capable of outputting a signal indicative of the unique identifier. The identification tag is mounted to the exterior surface of the piece of oilfield equipment beyond an external surface perimeter of the piece of oilfield equipment such that the identification tag is isolated from the exterior surface of the piece of oilfield equipment. The reader has an antenna receiving the signal indicative of the unique identifier from the identification tag.