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.