The Pokémon GO Trainer Club has the following password requirements:
1. Passwords must be at least 8 characters long and contain a mix of uppercase and lowercase letters, numbers, and/or special characters (e.g., !@#$%).
2. Passwords cannot contain words or phrases that are easy to guess, such as "password" or your username.
3. Your passwords should not be used on any other websites or apps, including those associated with Pokémon GO.
4. You should change your password regularly to ensure your account remains secure.