Smartphone checklist: Paying and shopping

Data-saving shopping: On the one hand, this topic concerns the online world: instead of choosing data-saving payment options such as direct debit, for example, many people use PayPal or similar payment providers. But traditional stores are also good at collecting personal information: Some stores and supermarkets use smartphones to track your movements in the store or entice you to make certain purchases with their own apps. This checklist will help you to defend yourself against this.