The password is used to unlock drives on your computer that do not contain the operating system. These requirements for your PIN or password are explained during the BitLocker setup process. Your company specifies the complexity required for your PIN or password.
If your computer hardware includes an enabled Trusted Platform Module (TPM), the TPM chip prompts you for your PIN before Windows starts on your computer. Data on the encrypted drives cannot be viewed without entering the PIN or password. The PIN or password requirements are set by your organization and depend on the kind of drive being encrypted. BitLocker helps secure your computer by requiring a personal identification number (PIN) or password to unlock the information that is stored on your computer.
