unit UserSessionUnit; { This is a DataModule where you can add components or declare fields that are specific to ONE user. Instead of creating global variables, it is better to use this datamodule. You can then access the it using UserSession. } interface uses IWUserSessionBase, SysUtils, Classes; type TIWUserSession = class(TIWUserSessionBase) private { Private declarations } public { Public declarations } end; implementation {$R *.dfm} end.