Mobile Retail EMI & Device Management Software
Budget: ₹37,500 – ₹75,000 INR
## Project Overview
We are looking to develop a complete **EMI Locker & Device Management Platform** for mobile retailers who sell smartphones on EMI.
The platform will allow retailers to sell mobile phones through EMI plans and manage customer devices. If a customer fails to make EMI payments, the retailer should be able to remotely restrict, lock, and manage the customer's device based on predefined rules.
The system will include:
1. **Customer Device Locker App (Android)**
2. **Retailer Dashboard (Web/Mobile Panel)**
3. **Super Admin Panel**
4. **Backend API & Database**
5. **License Key Management System**
The solution should be secure, scalable, and designed to support thousands of retailers and customer devices.
---
# System Workflow
The complete relationship flow will be:
**Super Admin → Retailer → License Key → Customer → Device → EMI Plan → Payment Tracking → Lock/Unlock Management**
Example:
1. Admin creates license keys.
2. Admin assigns keys to retailers.
3. Retailer sells a phone on EMI.
4. Retailer activates the EMI Locker app on the customer's device using a license key.
5. The license key becomes permanently linked to that device.
6. Retailer manages EMI payments through the dashboard.
7. If payments are overdue, the retailer can send lock commands or apply automatic restrictions.
---
# 1. Customer EMI Locker Mobile App
## Purpose
This application will be installed on the customer's smartphone purchased through EMI.
The app will communicate with the backend and allow authorized retailers to manage the device according to EMI payment status.
---
## Customer App Features
### User Registration & Activation
* Mobile number registration
* OTP-based authentication
* License key activation
* Device registration
* Customer profile creation
During activation, the system should collect:
* Device information
* Device model
* Android version
* Device identifiers
* License information
* Retailer information
---
# License Key Activation System
The app should work using a license-based activation system.
## License Key Features
Admin can generate license keys.
Each license should contain:
* Unique license ID
* Activation key/code
* Assigned retailer
* Activation status
* Device binding information
* Creation date
* Expiry date (optional)
## Rules
* One license key should activate only one device.
* Activated keys cannot be reused.
* Retailers should only see their own keys.
---
# EMI Management
The app should support EMI tracking.
EMI information:
* Mobile phone price
* Down payment
* Loan amount
* EMI amount
* Number of installments
* Payment frequency
* Due dates
* Pending balance
Customer should be able to view:
* Upcoming EMI
* Paid installments
* Pending amount
* Payment history
---
# Payment Reminder System
The system should automatically send reminders.
Reminder types:
* Before EMI due date
* Due date reminder
* Overdue reminder
Notification methods:
* Push notifications
* SMS integration
* Other messaging integrations (optional)
---
# Device Lock & Unlock System
## Remote Lock
Retailer/Admin should be able to remotely lock customer devices.
Features:
* Instant lock
* Scheduled lock
* Automatic lock after overdue EMI
* Custom lock screen message
Example:
"Your EMI payment is pending. Please contact ABC Mobile Store."
---
## Unlock System
Authorized users can:
* Unlock device remotely
* Unlock after payment confirmation
* View unlock history
---
# Offline Lock Capability (Important)
The system should support offline enforcement.
Requirements:
* EMI schedule should be securely stored on the device.
* Device should verify payment status locally.
* If payment is overdue beyond configured limits, restrictions should activate.
* Once payment is updated, unlock should happen after verification.
Developer should explain the complete offline security approach.
---
# Application Restriction / App Lock
Retailer should be able to restrict selected applications.
Features:
* View installed applications
* Select apps to restrict
* Enable/disable app restrictions remotely
Examples:
* Games
* Social media apps
* Selected applications
---
# Location Tracking
Features:
* Current device location
* Last known location
* Location history
* Device online/offline status
# SIM Tracking
SIM card status
SIM operator name
Mobile network information
SIM slot information (Single SIM / Dual SIM)
SIM change detection
Device network status
---
# 2. Retailer Dashboard
## Purpose
Each mobile retailer will have their own dashboard to manage customers, license keys, EMI accounts, and devices.
Retailers must only access their own data.
---
# Retailer Dashboard Features
## Dashboard Overview
Display:
* Total customers
* Active EMI accounts
* Pending payments
* Locked devices
* Active devices
* Available license keys
* Used license keys
---
# License Key Management
Retailers can:
* View available keys
* View used keys
* Activate devices
* Search keys
* Check activation history
Key information:
* License ID
* Status
* Customer name
* Device details
* Activation date
---
# Customer Management
Retailers can:
Add customers:
* Name
* Mobile number
* Address
* Device details
* EMI plan
* License assignment
Customer list:
* Customer name
* Phone number
* Device model
* EMI status
* Payment status
* Lock status
---
# Device Management
Retailers can view:
* Customer devices
* Device status
* Online/offline status
* Location
* Lock status
Actions:
* Lock device
* Unlock device
* View device history
* Manage restrictions
---
# EMI & Payment Management
Retailers can:
* Create EMI plans
* Update payments
* Add manual payments
* View payment history
* Track overdue customers
---
# Reports
Retailers should have reports for:
* EMI collections
* Pending payments
* Overdue customers
* Device status
* License usage
Export options:
* Excel
* PDF
---
# 3. Super Admin Panel
## Purpose
Admin controls the complete platform.
---
# Admin Features
## Retailer Management
Admin can:
* Create retailers
* Approve retailers
* Disable accounts
* View retailer activity
---
# License Key Management
Admin can:
* Generate unlimited keys
* Bulk generate keys
* Assign keys to retailers
* Disable keys
---
# Monitoring & Logs
System should maintain logs for:
* User login
* Device activation
* License usage
* Lock commands
* Unlock commands
* Payment updates
* Admin activities
---
# Security Requirements
Developer should implement:
* Secure API communication
* OTP authentication
* Device authentication
* License validation
* Device binding
* Encryption of sensitive data
* Role-based permissions
* Audit logs
Developer must explain:
* How license keys are generated
* How keys are secured
* How devices are uniquely identified
* How unauthorized unlocking is prevented
* How Customer's Data is safe after locking device?
* How commands are authenticated
---
# Technical Requirements
Developer should provide:
* Clean and scalable architecture
* Well-documented code
* Proper database structure
* API documentation
* Source control repository
---
# Final Deliverables
The developer must provide:
* Complete Android application source code
* Complete iOS application source code (if applicable)
* Retailer dashboard source code
* Admin panel source code
* Backend/API source code
* Database files/schema
* Complete project files
* Build and deployment instructions
* Technical documentation
* Knowledge transfer for future modifications
The final project should be fully owned by the client, and another developer should be able to understand, modify, and maintain the system in the future.
---
# Developer Experience Required
Preferred experience:
* Android Enterprise / Device Owner apps
* Mobile Device Management (MDM)
* Secure authentication systems
* Large-scale dashboards
* License management systems
* Payment/EMI platforms
Please share previous relevant projects, architecture details, and explain how you will implement device management features before starting development.
We are looking to develop a complete **EMI Locker & Device Management Platform** for mobile retailers who sell smartphones on EMI.
The platform will allow retailers to sell mobile phones through EMI plans and manage customer devices. If a customer fails to make EMI payments, the retailer should be able to remotely restrict, lock, and manage the customer's device based on predefined rules.
The system will include:
1. **Customer Device Locker App (Android)**
2. **Retailer Dashboard (Web/Mobile Panel)**
3. **Super Admin Panel**
4. **Backend API & Database**
5. **License Key Management System**
The solution should be secure, scalable, and designed to support thousands of retailers and customer devices.
---
# System Workflow
The complete relationship flow will be:
**Super Admin → Retailer → License Key → Customer → Device → EMI Plan → Payment Tracking → Lock/Unlock Management**
Example:
1. Admin creates license keys.
2. Admin assigns keys to retailers.
3. Retailer sells a phone on EMI.
4. Retailer activates the EMI Locker app on the customer's device using a license key.
5. The license key becomes permanently linked to that device.
6. Retailer manages EMI payments through the dashboard.
7. If payments are overdue, the retailer can send lock commands or apply automatic restrictions.
---
# 1. Customer EMI Locker Mobile App
## Purpose
This application will be installed on the customer's smartphone purchased through EMI.
The app will communicate with the backend and allow authorized retailers to manage the device according to EMI payment status.
---
## Customer App Features
### User Registration & Activation
* Mobile number registration
* OTP-based authentication
* License key activation
* Device registration
* Customer profile creation
During activation, the system should collect:
* Device information
* Device model
* Android version
* Device identifiers
* License information
* Retailer information
---
# License Key Activation System
The app should work using a license-based activation system.
## License Key Features
Admin can generate license keys.
Each license should contain:
* Unique license ID
* Activation key/code
* Assigned retailer
* Activation status
* Device binding information
* Creation date
* Expiry date (optional)
## Rules
* One license key should activate only one device.
* Activated keys cannot be reused.
* Retailers should only see their own keys.
---
# EMI Management
The app should support EMI tracking.
EMI information:
* Mobile phone price
* Down payment
* Loan amount
* EMI amount
* Number of installments
* Payment frequency
* Due dates
* Pending balance
Customer should be able to view:
* Upcoming EMI
* Paid installments
* Pending amount
* Payment history
---
# Payment Reminder System
The system should automatically send reminders.
Reminder types:
* Before EMI due date
* Due date reminder
* Overdue reminder
Notification methods:
* Push notifications
* SMS integration
* Other messaging integrations (optional)
---
# Device Lock & Unlock System
## Remote Lock
Retailer/Admin should be able to remotely lock customer devices.
Features:
* Instant lock
* Scheduled lock
* Automatic lock after overdue EMI
* Custom lock screen message
Example:
"Your EMI payment is pending. Please contact ABC Mobile Store."
---
## Unlock System
Authorized users can:
* Unlock device remotely
* Unlock after payment confirmation
* View unlock history
---
# Offline Lock Capability (Important)
The system should support offline enforcement.
Requirements:
* EMI schedule should be securely stored on the device.
* Device should verify payment status locally.
* If payment is overdue beyond configured limits, restrictions should activate.
* Once payment is updated, unlock should happen after verification.
Developer should explain the complete offline security approach.
---
# Application Restriction / App Lock
Retailer should be able to restrict selected applications.
Features:
* View installed applications
* Select apps to restrict
* Enable/disable app restrictions remotely
Examples:
* Games
* Social media apps
* Selected applications
---
# Location Tracking
Features:
* Current device location
* Last known location
* Location history
* Device online/offline status
# SIM Tracking
SIM card status
SIM operator name
Mobile network information
SIM slot information (Single SIM / Dual SIM)
SIM change detection
Device network status
---
# 2. Retailer Dashboard
## Purpose
Each mobile retailer will have their own dashboard to manage customers, license keys, EMI accounts, and devices.
Retailers must only access their own data.
---
# Retailer Dashboard Features
## Dashboard Overview
Display:
* Total customers
* Active EMI accounts
* Pending payments
* Locked devices
* Active devices
* Available license keys
* Used license keys
---
# License Key Management
Retailers can:
* View available keys
* View used keys
* Activate devices
* Search keys
* Check activation history
Key information:
* License ID
* Status
* Customer name
* Device details
* Activation date
---
# Customer Management
Retailers can:
Add customers:
* Name
* Mobile number
* Address
* Device details
* EMI plan
* License assignment
Customer list:
* Customer name
* Phone number
* Device model
* EMI status
* Payment status
* Lock status
---
# Device Management
Retailers can view:
* Customer devices
* Device status
* Online/offline status
* Location
* Lock status
Actions:
* Lock device
* Unlock device
* View device history
* Manage restrictions
---
# EMI & Payment Management
Retailers can:
* Create EMI plans
* Update payments
* Add manual payments
* View payment history
* Track overdue customers
---
# Reports
Retailers should have reports for:
* EMI collections
* Pending payments
* Overdue customers
* Device status
* License usage
Export options:
* Excel
---
# 3. Super Admin Panel
## Purpose
Admin controls the complete platform.
---
# Admin Features
## Retailer Management
Admin can:
* Create retailers
* Approve retailers
* Disable accounts
* View retailer activity
---
# License Key Management
Admin can:
* Generate unlimited keys
* Bulk generate keys
* Assign keys to retailers
* Disable keys
---
# Monitoring & Logs
System should maintain logs for:
* User login
* Device activation
* License usage
* Lock commands
* Unlock commands
* Payment updates
* Admin activities
---
# Security Requirements
Developer should implement:
* Secure API communication
* OTP authentication
* Device authentication
* License validation
* Device binding
* Encryption of sensitive data
* Role-based permissions
* Audit logs
Developer must explain:
* How license keys are generated
* How keys are secured
* How devices are uniquely identified
* How unauthorized unlocking is prevented
* How Customer's Data is safe after locking device?
* How commands are authenticated
---
# Technical Requirements
Developer should provide:
* Clean and scalable architecture
* Well-documented code
* Proper database structure
* API documentation
* Source control repository
---
# Final Deliverables
The developer must provide:
* Complete Android application source code
* Complete iOS application source code (if applicable)
* Retailer dashboard source code
* Admin panel source code
* Backend/API source code
* Database files/schema
* Complete project files
* Build and deployment instructions
* Technical documentation
* Knowledge transfer for future modifications
The final project should be fully owned by the client, and another developer should be able to understand, modify, and maintain the system in the future.
---
# Developer Experience Required
Preferred experience:
* Android Enterprise / Device Owner apps
* Mobile Device Management (MDM)
* Secure authentication systems
* Large-scale dashboards
* License management systems
* Payment/EMI platforms
Please share previous relevant projects, architecture details, and explain how you will implement device management features before starting development.