Android App to capture photographs

A web based interface will allow admin to create a username and sent password. The Android app will prompt the user for the login credentials and validate. The next screen will ask for a alphanumeric code ( say AB1234 ) to be entered and then the camera will be activated. Once the photograph will be clicked, the image will be saved as AB1234_1. The user is then given two choices : More Photos or Finish. If More is clicked, then a second photo is taken, and this time the image name will be AB1234_2 and so on. After Finish is clicked, the user goes back to the initial screen and the code is incremented by one. ie AB1235, but user is allowed to edit it if required. The camera settings as available can be allowed, to control resolution etc. While clicking the photograph, the GPS coordinates need to be taken from the Phone GPS and written into the Image EXIF, alongwith the time stamp. If the GPS is not turned on, the user is prompted to turn it on and the photo is not allowed to be taken. If the GPS signal is not available, then a location fix using mobile triangulation is to be done.