Personalization keys allow the mobile user to define (personalize) certain input field values within the mobile application.
         Mobile development supports two types of personalization keys:
                -  Preference attribute – you can define these when developing a mobile business object. They are  used in mobile applications and eventually stored in an Unwired Server. Before using these keys, each user sets their  own values. For example; name, address, zip code, currency, location, customer list, and so on.
 
                - Login/password – refers to the user's  login/password information used to log into the Unwired Server. The key values are stored in memory and maintained only for the user's current login session. Unlike preference attributes, login/password is read-only and reset each time the user logs in or changes their password. The values are  used as personalization attributes of other data source definitions.