The possibility of everyone having two iPads or more in front on them is not likely in most secondhand buyers' cases. Usually, people see one advertised on Craigslist, eBay, etc., then see it in person, at which point they will want to confirm what they're getting. If they've never seen a retina screen, they won't have any reference.
At buying point, there will be at least one iPad in front of any buyer, so they can check serial or model number.
Last edited by coolstuffs; 08-14-2012 at 02:08 AM.
Bold added for emphasis.
@coolstuffs - thanks but specs comparisons have always been easy to obtain but of no use when I don't have both ipads at the front of me.
@Kaykaykay - thank you for your comments above.
If I am buying second hand - and in bulk as I do - then I need to be able to tell quickly and easily which "generation" I am looking at - I guess I am going to have to carry a micrometer to check the thickness of each iPad - not a pleasant job if I have a pile of 200 to check!!"
I'm not sure if he/she is asking for inputs on how to check and would like an easy and quick method!
you will fill the diffrence when you will use it, apple is known for making simple classic looking devices, and there almost all products look same, but when you will use them, you will feel the diffrence