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Field Collector Guide

Field collectors use the Dharini mobile application to collect samples and record site information directly from the field. This guide covers all workflows and features available in the mobile app.

  1. Use the official link to download and install the latest version: https://in.dharini.artpark.ai/download/
  2. Install the application on your mobile device
  3. Grant necessary permissions when prompted:
    • Location – Required for GPS tracking
    • Camera – Required for capturing site photos
    • Storage – Required for offline data storage

Step 1: Open the App

  1. Launch the Dharini mobile app
  2. You will see the login screen

Step 2: Enter Mobile Number

  1. Enter your registered mobile number
    • This number must have been added by your project manager
  2. Tap Send OTP

Step 3: Verify OTP

  1. Enter the OTP (One-Time Password) sent to your phone via SMS
  2. Tap Verify
  3. You will be securely logged in

After logging in, you will see the Home Screen with the following sections:

Displays your assigned visits for the day and upcoming scheduled visits:

  • Site name and location
  • Scheduled visit date
  • Visit status (Pending, In Progress)
  • Distance from current location

Tap on any site to start or continue a visit.

Shows your completed visits:

  • Visit date and time
  • Site details
  • Number of samples collected
  • Sync status
  • Add Visit – Create a new site visit on the field
  • Sync Data – Manually trigger data synchronization
  • View Sites – See all sites (assigned and created)
  1. On the Home Screen, browse the Upcoming Visits section
  2. Assigned visits show:
    • Site name
    • Location
    • Scheduled date
    • Visit frequency
  1. Tap on a site from your assignment list
  2. The app will display site details
  3. Tap Start Visit to begin data collection

Once the visit starts, you need to enter required information:

Site Information:

  • Site conditions
  • Weather conditions
  • Any site observations

Sampling Metadata:

  • Date and time (automatically captured)
  • GPS location (automatically captured)
  • Additional required fields marked with an asterisk (*)

If you need to visit a location that hasn’t been assigned to you:

  1. On the Home Screen, tap Add Visit
  2. The app will open the new site creation form

Fill in the basic site information:

  • Site name or identifier
  • Site type
  • Location (automatically captured via GPS)
  • Any additional metadata
  1. Tap Save Site
  2. The site is now created
  3. You can immediately start the visit
  1. After starting the visit, select the disease for which you are collecting samples
  2. Available options are configured by your project admin
  1. Select the type of samples you will be collecting
  2. Enter the count for each sample type
  3. Tap Proceed

For each sample:

Option A: Scan QR Code or Barcode

  1. Tap Scan QR Code
  2. Point your camera at the QR code or barcode on the physical sample container
  3. The app will automatically capture the sample ID

Option B: Manual Entry

  1. Tap Enter Manually
  2. Type in the sample ID from the container
  3. Tap Save

The sample container is now digitally linked to the site and visit.

Step 4: Enter Replicate IDs (if applicable)

Section titled “Step 4: Enter Replicate IDs (if applicable)”

If you are taking replicates of the sample:

  1. Enter the unique replicate ID for each replicate
  2. This helps track multiple samples from the same source

Capturing Photos:

  1. Tap Add Photo
  2. Take a photo of:
    • The sampling site
    • The sample container
    • Any relevant environmental conditions
  3. Photos are automatically attached to the sample

Entering Metadata:

  1. Fill in additional metadata fields:
    • Sample condition
    • Collection method
    • Observations
    • Any other required fields
  2. All information is saved automatically

Before submitting:

  1. Review all entered information
  2. Verify sample details
  3. Check that GPS coordinates are accurate
  4. Ensure all mandatory fields are filled
  1. Tap Submit Visit
  2. The app will validate all required data
  3. If validation passes, the visit is submitted

If Device is Online:

  • Data syncs automatically to the server
  • Visit status changes to “Synchronized”
  • Visit moves from “Upcoming” to “Past Visits”

If Device is Offline:

  • Data is saved securely on your device
  • Visit status shows “Pending Sync”
  • Data will sync automatically when network is available

The Sites tab shows all sites:

  • Sites created by the project manager
  • Sites created by you in the field

Site Details Include:

  • Site name and location
  • Visit history
  • Assigned collectors
  • GPS coordinates

The Visits tab has two sections:

Upcoming Visits:

  • Assigned visits pending completion
  • Visits in progress

Completed Visits:

  • All your completed visits
  • Sync status for each visit
  • Ability to view visit details

Tap the Profile icon to view:

  • Your name and contact information
  • Projects you are assigned to
  • Your role (Collector, Collector Admin, etc.)
  • Profile picture (if added)

Access settings to:

  • Enable/disable automatic sync
  • Manage notifications
  • View app version
  • Log out

The Dharini app is designed for offline-first operation.

  1. Data Collection: All data entry, photo capture, and visit management works without internet
  2. Local Storage: Data is securely saved on your device
  3. Pending Sync: App shows “Pending Sync” status for unsynced visits
  4. Auto Sync: When network is available, data syncs automatically in the background
  • Start each day by syncing any pending data from the previous day
  • Keep your device charged (GPS and camera use significant battery)
  • Do not uninstall the app while you have pending sync data
  • Connect to WiFi or mobile data at the end of each field day to sync
  • ✅ Check your assigned visits for the day
  • ✅ Ensure your device is fully charged
  • ✅ Sync any pending data from previous visits
  • ✅ Verify location permissions are enabled
  • ✅ Take clear photos in good lighting
  • ✅ Double-check sample IDs before scanning
  • ✅ Complete all mandatory fields
  • ✅ Add notes or observations as needed
  • ✅ Connect to WiFi or mobile data
  • ✅ Wait for all visits to show “Synchronized” status
  • ✅ Review any error messages or sync failures
  • ✅ Charge your device for the next day

For common issues and their solutions, see the Troubleshooting Guide.