One of the thing that must be taken into account is that fidelity is a way for companies to gain access to personal datas on consumers which is a great thing economically speaking for them.
A system like Gatcoin would prevent the collection of personnal datas by the companies or not ?
I don't think that Gatcoin will be collecting personal data. I think each individual company will , with their promotions. but these are always optional, if you don't want to give your data, you won't have to.
Hmmm, are you sure Gatcoin won't be doing that? If they know some personal info, they can market the different things better to you though. It's always a tradeoff.