[wxncpudc] Connectable devices

For example, buy a consumer device to electronically monitor temperature.  There are an unlimited number of things a consumer might want to do next with the temperature: display it (on various display devices), record it, broadcast it, use it to control another device.

But consumer devices aren't designed this way in general, designed to be one component in a larger system that the consumer assembles.  Specialist devices are, but they are often more expensive due to lack of economies of scale.

This seems to be a problem.  Why?  I don't think the root cause is consumers wanting it this way, which could easily be disproven by demonstrating that "custom composable" make consumers more happy.  In principle, connecting things can be made easy by designers.

I suspect it is the lack of standardized interfaces, and patent and licensing restrictions on proprietary interfaces.

But perhaps Arduino or Raspberry Pi are vanguards are of a new age about to dawn.