i'm buying a used ipod shuffle. i'm wondering, if it needed repair, how would the apple store know if it's within its applecare time? in other words, if i brought it in, how would they know if its still eligible for its initial warranty?
I'm not sure... they usually go by a serial number. Does the shuffle have a serial number? They'll usually type in the SN and it'll say how many days it has left of AppleCare coverage. That or you might get lucky (depending on whom you speak w/) and they might just swap it out for you.
Apple uses the serial number on the back of the ipod .. if it's less than a year old it's covered an you can also buy an extra year worth of apple care(not really worth it for a shuffle).
If you need any info on the warranty jus pm me the serial number an i'll gsx it.
MUCKYFINGERS, you can also check how long your shuffle is covered by entering your serial number yourself (if you'd rather keep your serial private): http://www.apple.com/support/. Over on the right hand side and slightly down a bit, is the attached screen shot of the area, enter in your serial there.