Abstract: A method and a system for enabling a user of a multi-user transportation system to initiate a transaction for at least one of a good and a service offered by a third party, the method comprising providing each user of the multi-user transportation system with an application running on a corresponding mobile processing device, wherein the application is used for identifying a corresponding itinerary taken by a corresponding user amongst a plurality of itineraries in the multi-user transportation system; providing an interface for enabling a third party to provide at least one advertisement offer, wherein the providing of the at least one advertisement offer comprises providing at least one of a location-based target criterion and an indication of a corresponding advertisement; estimating a current position of a plurality of users using at least the itinerary identified and the application; identifying a group of at least one target user using the location-based target criterion and the corresponding estimated

Abstract: A method for providing a loyalty program to a user of a multi-user transportation system, the user carrying a processing device, the method comprising detecting a position of a start of a trip using the processing device, wherein the trip involves use of a multi-user transportation system on at least one portion of it; detecting a position of an end of the trip using the processing device; identifying a trip itinerary made by the user in the multi-user transportation system using at least the position of the start of the trip and the position of the end of the trip; determining a corresponding credit to be allocated to the user based on at least the identified trip itinerary made; allocating the corresponding credit to the user and providing the user with a user interface for enabling the user to exchange at least one portion of the allocated credit for at least one of a good and a service.