MIRACL Trust authenticates users for different service providers. To authenticate to your service provider, you need to create a MIRACL Trust User ID for a given device. If you need to use multiple devices for authentication, you can have multiple User IDs. For more information, see User ID Management. # What is the User ID The User ID is proof of your identity for a given service provider. This identity could be an email account, cell phone carrier account, bank account or national identity number. Your User ID is issued after you go through a verification of this identity. Usually, your identity and User ID have the same representation - your email address, phone number, IBAN or national ID. Once your identity is verified, and your User ID is created, you protect your User ID with a PIN.