Can I activate an offer or participate in a contest from a computer?

Of course! However, some offers are tied to certain stores or environments. In those cases, there’s always an information box before you activate that tells you if you have to be ready at the checkout in a store or if you can continue with your activation. In contests, even if you win on a computer and have to collect the prize in a store, the prize is saved under your profile so that you can show it when you are in the store.