When the chazzan says the birchot hashachar, there seems to be a practice of NOT saying baruch hu vvaruch sh'mo so that the individual listening and saying amein can be made yotzei through the chazzan's words.
There is also a practice of touching the tefillin during certain of the brachot. Combining these two practices, would one becoming exempt through the chazzan's reading make the motions of touching the tefillin (is it as if he is saying the blessings) or not because the touching is only part of a personal "saying"?
[I can't think right now of many other situations where saying is coupled with movement, and yet the individual can be exempted through someone else's saying -- but if other cases exist, then I presume that this question would apply there as well. One possibility is one who does not know to daven being exempted for shmoneh esrei by listening to the Shatz -- should the individual bow (and/or strike his chest) at the appropriate moments?]