If my phone were fitted with secure caller id
Does that exist yet?
I've no idea.
Secure? Against what?
Caller-ID is secure against a number of threats. It's insecure against
another bunch. (It's heading in the less-secure direction; the height
of the barriers against injecting random CLID are getting lower all the
time.)
Last I checked, convincingly spoofing caller ID is one of the fun
things you can do when you start fiddling with
asterisk/freeswitch/etc
Yes and no. Asterisk and its ilk let you set caller-ID to whatever you
please, yes, but for it to be of any use for forging caller-ID in the
sense relevant here, your uplink to the PSTN has to accept and pass
along the caller-ID you set - an uplink willing to do that is the real
barrier. (Access to such uplinks is steadily becoming cheaper, which
is why I say the barriers are getting lower. For example, I have such
access, but most of my friends either don't have such access or don't
know how to use it if they do.)
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