These days, everyone's smartphone has effectively become the equivalent of these devices. Even in the military, smart devices and tablets are linked to portable sensors, GPS-enabled hardware and even weapons systems to run diagnostics or control their functions. Trek has had PADDs forever, and now we have them everywhere.
Perhaps this is something for the Future of Trek forum, but I wonder if people will see some future incarnation of Star Trek, and seeing the ubiquitous communicators or tricorder, they will point at them and joke about how old-fashioned they will look... Thoughts?