Social Insecurity Number

(I work at a phone centre for the New Zealand Tax Service (IRD), taking inbound calls for people who want to apply for a tax number.)

Me: *over the phone* “Have you got all the documentation along with the ID required?”

Customer: *over the phone* “Yes, I do. How safe is this IRD number? Is this similar to our Social Security number?”

Me: “Not quite. These numbers are safe.”