[PCI-DSS] 3.2.1 Do not store the full contents of any track from the magnetic stripe (located on the back of a card, contained in a chip, or elsewhere). This data is alternatively called full track, track, track 1, track 2, and magnetic-stripe data.
3.2.1 For a sample of system components, examine the following and verify that the full contents of any track from the magnetic stripe on the back of card are not stored under any circumstance:
[ul]
[li] Incoming transaction data[/li][li] All logs (for example, transaction, history, debugging, error)[/li][li] History files[/li][li] Trace files[/li][li] Several database schemas[/li][li] Database contents[/li][/ul]