Environmental credit social system for good practices

Mobile applications in Black Berry and Android were developed to simulate participants' waste recycling good practices shown as in Green House Gas emission kg CO
₂
e reduction, and those applications were further incorporated within an environmental credit social system for good practices, based upon an environmental database. The exchange of the mobile QR codes, which takes place when a waste recycle contributor deposits waste cooking oil at collection stations, makes authentication requests to the database server. The GHG emission reduction in kg CO
₂
e is calculated and corresponding GHG credit will be added onto an environment household account of a recycling contributor. The GHG credits can also be obtained by member's purchases of goods, foods and services from cooperative shops, restaurants, and public facilities that participate in the environmental credit social system, as well as make own contributions to reduce GHG emission in their operations. The shops, restaurants and public facilities can issue promotion vouchers purchasable by the GHG credits with extra services, to attract the member customers to visit shops and restaurants. The environment household account plays a major role in the social system, as credits can be added for environmental good practices, not only for recycling the waste cooking oil, but also for using public transportation instead of personal vehicles. This environmental credit social system drives the whole society to reduce GHG emission, as well as develops business and the economy in the society.