A system for designating a wireless communication device (WCD), a method of identifying a WCD, a system for identifying users of WCD in local zones, and machine-readable carriers enabling implementation of the aforementioned methods are proposed. The method identifying WCD includes steps of accepting network packets containing device identifiers (DIs), determining DIs, checking whether the DI is stored in a database associated with the system. If it's not stored in the database—initiating an application pre-installed on the WCD that sends a registration request to the system, during which DI is inputted into the database along with an application identifier (AI) associated with the DI, and acting as an address to which push-notifications corresponding to the WCD are sent. If DI is stored in the database, AI is retrieved therefrom. The proposed methods and systems provide for a possibility of identifying WCDs together with their geolocation in local zones.