You're right, it's actually 6. When I first read it as "PIN" I assumed it was some kind of quick password alternative for recognised devices and it would need

You're right, it's actually 6. When I first read it as "PIN" I assumed it was some kind of quick password alternative for recognised devices and it would need a full password for unknown machines but nope, it's the whole password. It horrifies me that at some point they thought, "A 4 digit pin isn't very secure, 6 should be enough!"