Contest for Programmers: Fakkah Smart Box

A call for developers! Develop a Smart Box to collect fractions (Fakkah) remaining in bills in stores, to support projects that build and develop the communities in Egypt. Provide your solution as a prototype design that serves as a proof of concept. The solution should include a clear plan of action indicating the estimated duration for each step and details on the usage of the reward for creating a prototype. The plan should also contain the cost per unit in case of mass production.