John, I agree on the fact that IHS report is a reliable source of information. Major players in Access Control or Video security industry shall at least subscribe to their report once in their life (and repeat the process yearly if happy).
But for the Card reader industry as well as Door controllers, I still feel that some major and medium players are missing in IHS. There is some work to do.
The reason that I find to this is that unfortunately not all manufacturers understand the interest of cooperating with IHS. There is also an old school way of thinking "I don't want to give my numbers because I want to be an hidden champion" (result is often that these ones stay hidden for life, but don't become champions).
In a nutshell:
- IHS is according to me the best source of information regarding Security market (manufacturers)
- Numbers provided have still to be taken as guidelines and shall be material for interpretation