# Pastebin U4aiGpVp
Use cases:
1. A user have multiple "accounts", e.g. private/business. Payment App can
identify this by email/phone
2. Shared computer/browser. Payment App can identify the user by email/phone
3. Payment App require customer or purchase details. Payment App do not
have to ask for the same information again / The merchant does not have to
provide the information in two places (payment method specific object)