An event handler is configured as shown on the right:

• 'Client logged in' is selected as the Triggering event (see Login (Events)).
  
  

• The Validating rule is contested here in terms of the Is mobile rule. A Static rule has been added in an OR junction. This is ineffective with the switch set to 'OFF' (see image), but can be activated to simulate the effect of the Is mobile rule when logging on in each session.
  ►NOTE◄ If a corresponding simulation is required for the entire system, the definition for the Validating rule as a whole should be transferred to an association criterion, which must then be assigned directly at all relevant points or used as a Sub criterion rule.
  
  

• Accordingly, the Actions on passed rule are executed only if the session is classified as 'mobile' according to the browser's specifications:
  
  

  • A Show alert (Popup) event action displays the specific greeting text seen in the runtime example above.
    
    ►NOTE◄ At this point, a more comprehensive text could also be obtained from the Localization, e.g. to provide information about specific restrictions that take effect at different points in the system depending on the Is mobile rule (omission of menu items, alternative forms, etc.).