The key card unlocks the car when you tap it on the door pillar and lets you drive when you tap it on the console. It is handed over with the car and returned with it. If you lose it, tell operations on WhatsApp at once so the card can be removed from the car; a replacement card carries the published charge.
Question
What is my key card and what if I lose it?
The card unlocks and starts the car; report a lost card on WhatsApp at once.