Mobile development

I need an Android app. I would like it designed and built. We are 2nd year B. E CSE students residing in chennai. We are doing a project named automated delivery [login to view URL] requires building of a package receiving system controlled by an app. This app must include input of data such as order no and range of days expecting delivery and intimating the app user about the status of the package after being delivered. The delivery system should consist of a touch panel where the order no is entered and hollow space where the package is placed. The working of a delivery system should be that when the delivery guy comes he should enter the order no on the touch panel and if the input order no and the entered order no are same, the package can be placed in the hollow space else cant be placed(the working is just like a safe which opens when the correct password is entered). As soon as the package is placed in the hollow space and closed,it should automatically locked and the app should immediately intimate the app user that the package is received.