Does Apple Install A Rear End Camera To A IPod Touch 5Th Gen?

I Was Wondering Because, The guy at Best Buy who is selling us the iPod touch fifth-generation did not tell us that it didn't have a rear facing camera and I was just wondering if Apple could install one on an already purchased iPod touch 5th generation, I saw some on eBay that look like you can install them your self, but I was wondering if Apple can do it for you. Thanks!