I find you can get a good idea of what's going on from reading between the lines of Wyden's statements. As a member of the intelligence committee he cannot directly disclose the operational details, but you can look at where he's concerned.

From the CNN article on this:

>> Another amendment at issue was from Democratic Sen. Ron Wyden of Oregon, a member of the Intelligence Committee. His amendment, which was co-sponsored by several of the most liberal Democrats and conservative Republicans in the chamber, would strike a new part of the program that he argued would lead every day Americans into helping the government spy if they have “access to equipment that is being or may be used to transmit or store wire or electronic communications.”

On the face of it, any cellphone or smartwatch seems to fit that definition. They could be converting everything into a listening device, recording all of it, and then making it available to intel officers only when they query for it and can argue one party is a foreign national.