EdSurge queried ISTE participants about this in June and this article details the responses.  I agree with some — single-purpose Clickers are pretty clunky.  The problem with this, as well as the disgust about Scantrons (although this fellow is talking Digital Scantrons, which I don’t think are as common as paper in our environment!), the “solutions” to both problems involves a 1-1 student to (compatible) device in the classroom arrangement, something I certainly can’t count on.  How about you?  What EdTech “turnover” would you like to see in 2018?