It will be very useful to develop Android & IOS application for DEAR platform
This application will be very usual for inventory purposes and van sale process such as pick the items from warehouse & load it to truck and off-load to customer store, scan the products & print the invoice / receipt on site (at customer site).
Actually, if the application is available, you will be able to use it on mobile Handheld / PDA devices with built in scanner either on Android or IOS.
Also, please consider the following features:
1- Add GPS & Map, by using GPS and map integration into the solution, your delivery drivers can easily ﬁnd on their mobile device the points of sales on their route.
2- Add digital sign. Customer can sign digitally on PDA/ Handheld mobile scanner screen as a proof of delivery.
Great Idea, Good Luck !