Toyota G-Key Vs H-Key

Question

Friday,I will test the Toyota New Car.(september,2013 L/O)

The Car is key system.I remember that the toyota Car have the G-key system and  

H-key system.

Can you tell me the method that distribute G-key and H-key.

For Example,there is the mark G in the key of  G-key system car.

Answer 1

http://www.michaelhyde.com/assets/images/89070-42820-web.jpg