Trainer Passport

Since your character recently moved to The Alola Region, instead of receiving a Trainer Card you'll be given a Trainer Passport. You take a photo of yourself as you begin your game, but you get to take a New one every Time you customize your trainer. (A player can retake their Passport Photo at any time by going into their Passport.) This Passport acts just like a Trainer Card, showing your Name, Trainer ID Number, Money, Battle Points, etc. Since there aren't any Gym Badges to show off this time around, you actually earn Stamps that are show through your Passport. Each Passport Stamp is unlocked by a specific method.

Passport Stamps
Official Pokémon Trainer (Beginning of Game)
Melemele Trial Completion (Defeat Kahuna Hala)
Akala Trial Completion (Defeat Kahuna Olivia)
Ula’ula Trial Completion (Defeat Kahuna Nanu)
Poni Trial Completion (Defeat Kahuna Hapu)
Island Challenge Completion (Complete Island Challenge)
Melemele Pokédex Completion (Register All Pokémon on Melemele Island)
Akala Pokédex Completion (Register All Pokémon on Akala Island)
Ula’ula Pokédex Completion (Register All Pokémon on Ula'ula Island)
Poni Pokédex Completion (Register All Pokémon on Poni Island)
Alola Pokédex Completion (Register All Pokemon in Alola Pokedex)
50 Consecutive Single Battle Wins (50 Win Streak In Single Battle Mode At Battle Tree)
50 Consecutive Double Battle Wins (50 Win Streak In Double Battle Mode At Battle Tree)
Poké Finder Pro (Get Final Version of Poke Finder)
50 Consecutive Multi Battle Wins (50 Win Streak In Multi Battle Mode At Battle Tree)