Data Key is a special memory unit that allows retrieving Audit data from more payment systems. Similarly, the Mifare® Data Card can retrieve Audit data from more Caiman systems equipped with Mifare® technology.
The number of Audit data retrievals possible with a Data Key or a Mifare® Data Card depends on the size of data present on the systems. Using the extended Audit mode, the amount of storable retrievals is reduced, as data increase substantially.
The Data Key allows also configuration of PIT systems in the field.