technology today allows to store enormous amounts of data cheaply, convert voice to text, sort/filter through text. anything that can be recorded eventually will be recorded and reprocessed at later times.
fortunately we also have SSL concept to counter any excess of 3rd party access to private exchange over communication networks. some future gen. phone models may have peer to peer encryption build-in and integrated with calls just like today it's integrated with email, https, sftp, ssh, etc.
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