This is a really cool idea and I'm glad someone's doing it. Have you considered talking to Amazon about it? It's definitely in their best interest for products to be easily identifiable, and they're already doing work on it in a different way with Price Check[1].

Unfortunately there are other companies with a strong incentive to make identifying specific products as difficult as possible[2]. And clothing companies have never been good about sticking with a specific product anyway. I got a Ralph Lauren suit last year that I liked enough to consider ordering another one, but they had already stopped making that style. Maybe dresses or something I could understand, but men's suits?

If you can't buy a product even if you can identify it, then what's the point? Do you have any thoughts on how to get around this problem? One idea that comes to mind is that you could use your data to build a ranking of how long clothing companies (or any companies) stick with their products. I'd certainly find it useful.

Best of luck!

[1] https://play.google.com/store/apps/details?id=com.amazon.pri...

[2] http://online.wsj.com/article/SB1000142405297020462420457717...