The rounded-up amount is transferred directly to the supported project via bank transfer. 

Such transfers usually require a TAN entry. When you activate the feature, you will be asked to classify the IBAN of the project (Toni Garrn Foundation) as trustworthy. This means that transfers to this IBAN, regardless of whether they are initiated in the course of the rounding up feature or separately by you, may be carried out in future without an additional security query in the form of a TAN.