On a somewhat related note- does anyone know if it is possible to use an iPhone ISIS case on an iPod?? It's not technically a smartphone, but it can of course download and use most apps just like an iPhone would. According to the ISIS FAQ, one doesn't need to be connected to one's wireless carrier to make NFC payments. But even if that weren't true- I could still perhaps use the iPod just to sign up for Serve, even if I couldn't actually make payments with ISIS. Also, our iPod and iPhone 4s use the same charger shape, so no issues with the case connecting right to the iPod. Any chance this could actually work??