BlackBerry ID is designed to allow a convenient and secure method to authenticate the identity across various BlackBerry related products and services. This allows for seamless transferring and sharing of information across the products or services that the account has been authorised for. (Example: A user can have the same BlackBerry ID authenticated to a BlackBerry smartphone and a BlackBerry PlayBook to share billing information for purchases with BlackBerry App World.)
Due to this sharing of information, it is not recommended to share a BlackBerry ID between multiple users.










