Currently, we use a concept of namespace that is used as a conatainer for user things. A user puts things in a namespace for 2 main reasons :
The namespace is uncorrelated from the thing id.
For ease the management and the avoid the sealing of the things in their silo.
The domain is a container of things. And a things should belong to a single domaine. To ease the identification of the thing (IRI), the IRI is built with the domain name and a uuid string.
domain name = http://www.orange-labs.com/thingin
thing id = http://www.orange-labs.com/thingin#livebox102458
The consequencies of this definition are: