Jehuty card:
Enter "JEHUTY" as a password
Karen card:
Enter "KAREN" as a password
Mika card:
Enter "MIKA" as a password
Viper card:
Enter "VIPER" as a password
XM8 card:
Enter "XMEIGHT" as a password
Bikini models :
Enter "ELYTS", "SABRAGE", "NOMEL", or "MAEB" as a password for clips of Japanese bikini models
Note:
This will cause Snake to get a nosebleed, but will not affect Teliko. ONLY WORKS ON JAPANESE VERSION!