The UHF Dual!D Card Holder can be mounted on the windshield. The card holder identifies the vehicle. The reader is configured to only proceed with reading any ID if there is a valid Nedap ID for vehicles present. The reader will at that time identify the vehicle (card holder) and the driver (the card - MIFARE 1K Classic 13,56 MHz - in the card holder). Only relevant UHF tags are read which prevents errors and limits security risks.