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A comment on FCC will require phone carriers to authenticate calls by June 2021 [pdf]. Parent comment

Re:FCC will require phone carriers to authenticate calls by ... by r00fus on Tuesday March 31, 2020 @07:30PM (#22743957)
Maybe I'm missing something but if authentication is allowed, it will allow the client or carrier to block calls based on authenticated ID accurately. RN that's effectively impossible.
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Re:FCC will require phone carriers to authenticate calls by ... by mehrdadn on Tuesday March 31, 2020 @07:37PM (#22744024)
Yeah I get that, but I'm asking what a user should expect to actually happen by that time, not what a user should expect to be theoretically no longer impossible by that time.
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