Originally Posted by
carrotjuice
This is where SQ is miles ahead of BA. Its system immediately recognizes the phone number from which you're calling against your Krisflyer profile, and prompts you to key in your 6-digit Krisflyer PIN. No more spending close to a minute authenticating yourself once an agent picks up.
I would be surprised if that approach survives more than another year or two. Given that incoming telephone numbers can be easily manipulated, this isn't a secure system in a world of keyboard logging.