To make your car keys into a card, you need to do the following:
1. Measure the size and shape of the key: Use a card measuring tool or card making machine to measure the size and shape of the key.
2. Make a card: Use a card making machine to make a card, copying the shape and dimensions of the key onto the card.
3. Cut the card: Use the card cutting machine to cut the card into the same shape as the key.
4. Install the chip: Remove the chip from the key and install it in the corresponding position on the card.
5. Install the card: Insert the modified card into the door lock and test whether the door can be opened.
considerations
During the modification process, make sure that the chip of the key can work properly, otherwise the card cannot be used. In addition, the modified card needs to be tested to ensure that it can properly open the door, otherwise it may cause unnecessary trouble.