Applicability Statement
The OAuth 2.0 IoT grant defined in this document is only applicable
for OAuth 2.0 clients that are resource constrained. For all other
clients regular OAuth 2.0 can be re-used since those clients will be
able to execute the RFC 6749-defined client credential grant, which
uses HTTPS as a transport.
The communication between the client and a resource constrained
resource server is not described in this document and orthogonal to
this document.