Point of Sale software including CRM/Rewards/Prepaid/Loyalty (Open source welcome)

We're looking for a P.O.S. system with a touch screen interface that can also manage customer information, prepaid purchases and rewards / loyalty programs. Were open to a license free , open source POS with these modules added or included by default. Functionality of main modules /sub-systems: 1) Administration access and Employee access seperated (Access could be controled) 2) Have a Membership option (Prepaid, Points system, Refund option) 3) Loyalty System, Awarding points to registered customers to exchange 4) Inventory and Sales Tracking 5) Ability To write and read RFC ID and Magnetic Strips 6) Ability to read car license plates and associate to customer accounts or profiles. Use profiles to develop purchasing profile and incite staff to up-sell or cross sell based on prior history. Brief breakdown of tasks for development of POS System: STAGE #1 Development of Management sub-system 1) create core application modules. 1) user management (creation, editing, deletion) - administration access and Employee access seperated 2) customer management (creation, editing, deletion) STAGE #2 Development of sub-system ‘RFC Reader\Writer’ This sub-system will write and read RFC ID and Magnetic Strips 1) create api for get RFC login data and search customer in management system 2) creating a driver for RFC (corresponding to operating system) 3) create soft adapter application to push data in management system STAGE #3 Other sub-systems such as Loyalty System, Awarding points, Reports 1) create System Awarding points to registered customers to exchange 2) create Loyalty System Awarding points to registered customers to exchange