Four different chip cards specify who can access specific DTCO® digital data.

• Driver cards save driver activities, events, faults and vehicle changes.
• The company card authorises vehicle data to be downloaded from the mass memory.
• The control card enables authorities to access data for legal purposes.
• The workshop card switches on the calibration function of the DTCO® – and it can also be used as a driver card for testing and inspection purposes.

The validity of a card may differ according to the region in which it is being used and any relevant regulation must be adhered to.