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A comment on Google Fiber Phone. Parent comment

Re:Google Fiber Phone by criddell on Tuesday March 29, 2016 @07:51PM (#11385916)
I wonder why they can't fix the caller id problem? Why is it so easy for telemarketers to use fake information? I've basically moved to a telephone whitelist -- if you aren't in my contacts list, you are going straight to voicemail.
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Re:Google Fiber Phone by rahimnathwani on Tuesday March 29, 2016 @11:03PM (#11386677)
"I wonder why they can't fix the caller id problem?"

SMTP is much newer than the phone system. We haven't solved the problem of fake emails, because there's no way to get every mail domain and server to fully support DMARC and SPF.

Now, imagine the same problem, but with a load of old analogue equipment. That's why there's no clear path to secure caller ID.

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