tion and Mobility Decoupling the host identity from the actual location has been the topic of extensive research. Some proposals address this issue by respecting the end- to-end argument [20-22], while others rely on an overlay [23-25]. All of these approaches are trying to address the same problem: The IP address performed well as a location identifier due to inherently embedded topological location information. When mobility is introduced, the IP can no longer be used for host identity since the host is now moving around. Thus, the IP address loses all meaning of identity reference and degenerates into a pure routing identifier. Decoupling the identity from the attachment point is currently solved by inserting a level of indirection on top of the network layer that manages the abstraction of host identities. This is essential for reasons of mobility, multi- homing, etc. In our case, handles are used to identify digital objects in contrast to using host identifiers as in the case of HIP. In this section, we will compare our solution to host identity protocol (HIP) [20]. There are several proposals that address the current need for an additional naming system on the Internet as a result of the limitations of Domain Name System (DNS) and IP namespaces. In this section, we focus on three proposals that describe global naming architectures, namely the work by Balakrishnan, Shenker and Walfish [26,27], TRIAD [28] and the Globe Project [296]. These proposals are of interest because of their close resemblance to the Handle System [11], which we consider the most accurate persistent identifier solution to entity identification. The naming system proposed in [26] uses a very similar approach to that of the Handle System. Both proposals share the concepts of a global name service, identifier persistence, and independence of identifier from attributes, delegation, high-level identifiers, distributed administration, etc. However, in contrast to the purely flat semantic-free names used in layered naming [26] SFR [27] and the