Lofwyr had supplied the Edward Vinson identity. In giving it up, Sam was throwing away a potentially useful resource. The fictional Vinson had a townhouse in Seattle proper, a comfortable and nondemanding Matrix research slot with Aztechnology, and a System Identification Number that would have allowed Sam easy passage through most of the metroplex. Without that SIN, Sam was barred from some of the places where he hoped to hunt Drake. But with it, Lofwyr would likely be able to monitor everything Sam did within the public Matrix, tracking his use of facilities and observing any financial transactions Sam made using the identity. Until Vinson evaporated, he could open doors, but evaporation was a good possibility after Sam had used Lofwyr’s chip to access Genomics research files. He had done it even though sure the Dragon would object. To punish Sam, Lofwyr might make Edward Vinson vanish, leaving Sam high and dry at some Lone Star checkpoint or corporate security desk.