design interface


develop product database
	product table


develop mapping coordinates database
	
	cross reference to product database


develop customer database
	customer table
	shopping list table


develop voice recognition system (third party)

	develop voice pattern database
	
	bridge to product database
		product table


develop scanning system (third party)
	
	bridge to product database
		product table
		
	bridge to interface


develop guidance system

	bridge to product database
	
	bridge to mapping coordinates database
	
	bridge to voice recognition system
	
	bridge to interface



develop list and price calculation

	bridge to customer database
		customer table
		shooping list table
		
	bridge to product database
		product table
	
	develop list calculation logic
	
	develop price calculation logic	
		
	bridge to interface