Looking for Native Android Application With BLE Printer

Objective: To design a mobile app that can act as a tool for connecting to an API to fetch customer details in desired format. Application will connect with backend to get the details of the people living in a local Area. One Supervisor may have one or more Area assigned to it. Mobile App Flow Details: 1. Login Page where the Supervisor will enter his/her credentials. 2. Once the Supervisor enters the credentials along with a Unique Code (given by us), App will connect to the Master API (first time) that will pass on the request to Area Specific API for allowing the data download (one-time activity upon first login). Post this the Mobile App will have the Area data locally available for search purpose. (So, Search will be always offline within local database of mobile). 3. Going forward whenever this user will login, the Mobile App will hit its dedicated API (and not the Master API) 4. Logged in User will have a Search facility to find out the person’s record by Unique number (which is unique). On addition to that, Advance Search will have option to search by Name/Surname, Mobile Number or some other credential) 5. Once a record is searched and presented on the screen, will have a Print option available to be able to have small printed receipt of that record (may be attained via Bluetooth printer). 6. User will also get an Edit Option to be able to manipulate certain fields of customers. Changes made via mobile phone will be locally updated on an immediate basis. 7. One-time two-way sync will happen between Mobile App and Server to write the updates to server/mobile app data. 8. Every page should have a light colored background and a watermark image as a background which is received during activation/login along with color theme on all screen of app. Both these background color and image will be specific to Area/political Supervisor. (This will be controlled using an admin console on web). Important Points to remember: 1. Communication between Mobile App and the APIs should be completely secured, so that no one can tamper in to hack confidential data. 2. Appropriate Load balancing mechanism will be needed to make sure the App is not getting hung when syncing with server & searching offline data. We expect major tables to have 10+ lakh+ records where this API will be querying in. And multiple Supervisors might be doing updates (from Mobile App to Server) simultaneously. We should not run into any performance issues. 3. Multiple Languages will need to be supported for this App, hence Unicode data type to be utilized (DB will have info stored in multiple languages) 4. Would like to have Search facility and UI pages showing text content in different languages. Duration: 1.5 Week (22nd Jun 2019)