Let me list some available car keys :
1. Mechanically cut keys :
These are cut using machines , mostly done by professional locksmiths.
2. Laser cut keys :
Ridges in keys are cut using laser , making duplicates are costly
3. Transponder keys :
They have microchip inside the keys
4. Smart car keys :
These keys are used for smart operations like opening doors etc
5. VAT keys :
Vehicle anti theft keys
6. Valet keys :
These used to handle for valet parking , these keys can only open driver side door and ignition starting , other options may not be available here.