When should I place an M2 signature using my card reader?

An M2 signature (blue button) is only ever requested to confirm a transaction. Furthermore, a request for an M2 signature is only made following a transaction that you yourself have requested or placed. A request for an M2 signature under any other circumstances is immediately suspicious.
Of course, an M2 signature is not always requested. Whether or not you need your card reader to make online payments depends on the payment options offered on the shop website.
For more information see 'Making secure online payments'.


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