By now, cell phones ought to have an end-to-end encryption app
   available.  Why not?  How many people use smart phones?  Probably half
   of the population.
   Is there a standard format of encryption available?  If such encryption
   is to take off, there ought to be one target format, so that users
   using multiple programs can talk to each other.  Is that already
   defined?
                   Jim Bell