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A comment on Introducing the Shift Card: Use Bitcoin where Visa is accepted. Parent comment

Re:Introducing the Shift Card: Use Bitcoin where Visa is acc... by Domenic_S on Friday November 20, 2015 @01:49PM (#10603026)
> (and caller ID is easily faked)

It's been a long time since I was into telephony stuff, but IIRC caller ID is easily faked but ANI is not. Do verifications use CID or ANI?

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Re:Introducing the Shift Card: Use Bitcoin where Visa is acc... by mh- on Friday November 20, 2015 @05:15PM (#10604221)
they use ANI, as they're toll free numbers you're dialing (which means they're already capturing ANI for billing purposes[1].)

this is also why caller ID blocking (as provided by your telco) doesn't work when calling toll-free numbers.

1: https://en.wikipedia.org/wiki/Automatic_number_identificatio...

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