Originally Posted by
aksai oiler
They are scanning your boarding card and taking information they are not entitled to. As I stated earlier the reason for them wanting to scan a second time is to monitor numbers - it is nothing related to the passengers security and there is no legal obligation for any passenger to agree to this if they so wish. They can threaten as much as they like it will not stand up, and if it means denial of boarding then they are legally responsible.
We live in an environment where information security is key, they are potentially violating this - because you don't know what they are doing with this information after your boarding pass has been scanned.
From my point of view I politely decline, if they don't like it I call for the supervisor.
You're right that there is no legal obligation to agree the second scan, and this has been discussed at length in other threads, though I don't think there is much to worry about from an information security perspective. They already have all the BP info from the first scan, the only extra info I can see they gain from the second is the time between the two scans, which they use for CAA stats.
Some people view the position of the scan as massaging the stats (though in their defence that is how the CAA measures these things, for better or worse), and they don't have a right to tell you it is mandatory, but I'm not sure there is any data theft conspiracy on the part of HAL.