Driver

to open all of the cheats,highlight the undercover option and press UP,UP,DOWN,DOWN,UP,DOWN,UP,DOWN,UP,UP,DOWN,DOWN.
It will take you to an option that reads "cheats".
press right to turn on the cheat,and left to turn it off.

Here are some passwords to get you through the first 7 levels in Miami
1 Bank Job          - Face, Face, Face, Face 
2 Hide the Evidence - Tire Tread, Badge, Cone, Red Siren 
3 Boat Chase        - Stoplight, Key, Key, Blue Siren 
4 Hit 5 Restaurants - Cone, Cone, Cone, Badge 
5 Superfly Drive    - Key, Red Siren, Red Siren, Stoplight 
6 Bait for Trap     - Key, Badge, Tire Tread, Blue Siren 
7 Take out DiAngelo - Badge, Cone, Badge, Red Siren