You can use your MuchBetter MasterCard like any other contactless card to make purchases.
The key fob and other wearable devices (e.g. WinWatch) work contactless only.
Transactions with your contactless payment devices are limited to a maximum of 10 payments. If you have reached this limit, all you have to do is log into your MuchBetter account from your mobile app and unfreeze your Fob to allow 10 more transactions.
Also, please keep in mind your local contactless payment limits. For example, in Canada, it is currently 250 CAD. In Europe, it is normally 50 EUR and for higher amounts, you may need to provide your PIN which you can find within your app.
*this article is specific to MB cards and wearables for customers in Canada only.