On Tuesday, August 16, 2016 11:22:10 PM Ben Finney wrote: > rhkra...@gmail.com writes: > SMS probably does not count as a decentralised system in the sense the > original poster is seeking. > > > Google Voice > > Google's services are highly centralised to a single vendor.
I am not sure what you mean in this context--I can send and receive text messages (and phone calls) to / from any other SMS / telephone service. (And, using Google Mail, the same for emails.)