Simple Android Supermarket Invoicing application

Write an android test application which will allow ultra simple, fast invoice processing from supermarket ticket to online invoice. IN the long term I want to add hundreds of online invoice processing sites of supermarkets and restaurants and other service providers/stores. NOw, I just want to test using Walmart's online invoicing feature which you can see here: (the page is in spanish) (don't worry about that - if you don't speak spanish - no problem) [login to view URL] The user will add their personal details (email address / name/ dob etc and invoicing details (could be more than one invoicing details (personal/company 1 / company 2 etc). Tax ID and address telephone number They will be able to sign up to use an an online service, in this tests scenario, just the walmart site, if there invoicing details are not known yet to the walmart database. They will process a ticket to an invoice in the following manner 1. Select the store (in this case select walmart) 2. Scan the ticket 3. Once recognised, feedback and dialogue to add any additional info with instruction/illustration (in the case of walmart, you must add a ticket number seperately) 2. select which tax ID to use from the list 3. feedbcak and confirm. (invoice processed, successful and sent to following email address (registered email address of the tax id) AN example ticket has been attached to the post.