The claims are clearly laid out, and the examples indicate possible applications. The technology is grounded well enough to avoid any challenge on the grounds of Utility. Date of filing establishes a certain amount of precedence. The reference to hardware somewhat mitigates the usual objections to software patents.
There is very little reason to believe that "a person skilled in the art" wouldn't or didn't come to the same solutions during or before the filing date. The actions of Ring Technologies and Parallel Iron strongly suggest that the patent was less about invention and more about litigation.
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