The various phases of the client device functionality deliver different benefits to deployers and consumers. Overall, the capability at the device level represents a huge market opportunity for deployers, who can now more easily build identity-based functionality into all different kinds of devices in a standards-based format. From a consumer perspective, the client device functionality is equally as exciting given the personalization, privacy and security measures this functionality can allow them to employ--on any device, with all of the devices interoperable. The Advanced Client Technology, for example, makes clients ‘first class identity citizens’ with controls for privacy and connectivity challenges built into the specifications.