Suggest OAuth flow(grant type) or approach for below requirement
问题 CompanyA is integrating with CompanyB where CompanyA's users will be buying devices of CompanyB. CompanyA wants to show user's device(CompanyB) details on their app by calling CompanyB's API on each user login. CompanyA user is authenticated on CompanyA IAM. CompanyA has to call register device when user tries to add an device first time. Help me to identify the flow which i can use to query particular loggedin user's device only. Do i need to create duplicate user account on CompanyB's IAM?