Something fish? Oooh, somebody values their privacy, be very afraid

Not really. As long as the people you're interested in know the rule then they'll reveal their phone number. The whole point is to identify the person on the other end of the line!

I'm with herveus on this, and use a similar system on my personal line. I don't want to talk to anonymous people.

In reply to Re^3: Security: Technology vs Social Engineering by adrianh
in thread Security: Technology vs Social Engineering by chunlou

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