For IoT & Security Devs

WhatsApp API for Attendance & Biometric Systems

Connect your biometric hardware or software to WhatsApp for instant check-in alerts.

punch_sync.sh

curl -X POST https://api.hkreach.in/api/external/send/template \
  -H "X-App-Name: enterprise-app" \
  -H "X-Api-Key: hk_live_..." \
  -d '{
     "to": "919876543210",
     "templateName": "entry_alert",
     "bodyParams": ["Employee ID 502", "09:05 AM", "On Time"]
     }'

Technical Capabilities

Power your software with official WhatsApp communication features in minutes.

⏰

Daily Punch Alerts

Notify staff or parents (for schools) about entry and exit timings in real-time.

🚪

Access Logs

Automate security alerts for unauthorized access attempts or late entries.

📉

Short Attendance

Send automated warnings to staff when attendance falls below monthly requirement.

Effortless Backend Sync

Integrate our REST API into your existing .NET, Java, or Node.js backend seamlessly.

Payload-Driven Messaging

No UI work needed in your app. Pass dynamic parameters via JSON and our API handles the rest.

Official WABA Branding

Build trust with your users by sending messages from an official, verified business profile.

Real-time Callbacks

Use webhooks to sync delivery and read status back into your database for a complete audit trail.

API Response

{
  "status": "success",
  "messageId": "wamid.HBgLM...",
  "timestamp": 1712318462,
  "meta": {
    "category": "utility",
    "billable": true
  }
}

Built for High Performance

Our infrastructure is optimized for high-throughput vertical applications requiring mission-critical uptime.

99.9% Uptime

Built on Meta's official Cloud API for maximum reliability and zero ban risk.

Scalable Webhooks

Receive tens of thousands of status updates per second with our low-latency webhook engine.

Developer Support

Direct priority support from our engineering team for complex custom integrations.

Deep Dive

Automate Notifications for Biometric & Attendance Systems

Whether managing a corporate office, a manufacturing plant, or a school, real-time attendance tracking is crucial. Hardware like RFID and biometric scanners provide the data, but integrating the Official WhatsApp Business API via HK Reach delivers the actionable insights immediately to the stakeholders.

Instant Alerts for Parents & Managers

Connect your attendance software to our API to trigger real-time 'In' and 'Out' punch notifications. For schools, this reassures parents of their child's safety. For corporations, it automates daily absentee reports directly to department heads.

Shift Rosters and Overtime Approvals

Move beyond simple alerts. Automatically broadcast weekly shift schedules to workers via WhatsApp. Managers can also receive overtime approval requests with interactive buttons, streamlining workforce management.

Partner with Harikrishna Enterprise to make your attendance software smarter and more connected.