Doy!
They track credit cards because they are given to them by a "sponsor" group or individual. Most of them are pre-paid, like children off to college.
Individuals and contract holders add cell members to an account and those purchases can track locations etc. I bet the hijackers used credit cards to but their plane tickets- and in that case the plane was a WMD. So their tactics are unconventional and therefore purchases may be.
It's not so much the purchases but the activity.
Quote:
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"It is our understanding that the intelligence community agencies make such requests on a limited basis,"
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And the big broad random searches don't yield much anyway.
Data mining is not an invasion of privacy because it is programmed and run by super computers. If you think that every purchase you make isn't compiled into reports already you are sadly mistaken.
Am I pissed that my "Food Lion MVP Coupon Card" on my keychain tracks what I buy? No. Hopefully, the store will carry more of the Tampax pearl variety.