diff --git a/.vscode/settings.json b/.vscode/settings.json
index f961bde..cb48af9 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -9,5 +9,6 @@
   ],
   "python.testing.pytestEnabled": false,
   "python.testing.unittestEnabled": true,
-  "postman.settings.dotenv-detection-notification-visibility": false
+  "postman.settings.dotenv-detection-notification-visibility": false,
+  "python.analysis.autoImportCompletions": true
 }
\ No newline at end of file
diff --git a/api/sms.py b/api/sms.py
index 52fc234..71c83b9 100644
--- a/api/sms.py
+++ b/api/sms.py
@@ -4,8 +4,13 @@ import json
 import logging
 
 logger = logging.getLogger(__name__)
-api_url = config("SMS_API_URL", default="")
-api_key = config("SMS_API_KEY", default="")
+api_url = str(config("SMS_API_URL", cast=str, default=""))
+api_key = str(config("SMS_API_KEY", cast=str, default=""))
+
+if not api_url or not api_key:
+    raise ValueError(
+        "SMS_API_URL and SMS_API_KEY must be set in the environment variables."
+    )
 
 
 def send_otp(mobile: str, otp: int, message: str):
diff --git a/api/tasks.py b/api/tasks.py
index 2c0a489..461e01f 100644
--- a/api/tasks.py
+++ b/api/tasks.py
@@ -1,16 +1,57 @@
 from django.shortcuts import get_object_or_404
 from api.models import User
+from devices.models import Device
 from api.sms import send_sms
 import requests
 from apibase.env import env, BASE_DIR
 import os
 import logging
+from celery import shared_task
+from django.utils import timezone
 
 logger = logging.getLogger(__name__)
 
 
 env.read_env(os.path.join(BASE_DIR, ".env"))
-PEOPLE_API_URL = env.str("PEOPLE_API_URL", "")
+PERSON_VERIFY_BASE_URL = env.str("PERSON_VERIFY_BASE_URL")
+
+
+@shared_task
+def add(x, y):
+    print(f"Adding {x} and {y}")
+    return x + y
+
+
+@shared_task
+def deactivate_expired_devices():
+    expired_devices = Device.objects.filter(
+        expiry_date__lte=timezone.localtime(timezone.now()), is_active=True
+    ).select_related("user")
+    print("Expired Devices: ", expired_devices)
+    count = expired_devices.count()
+    user_devices_map = {}
+    for device in expired_devices:
+        if device.user and device.user.mobile:
+            if device.user.mobile not in user_devices_map:
+                user_devices_map[device.user.mobile] = []
+            user_devices_map[device.user.mobile].append(device.name)
+
+    for mobile, device_names in user_devices_map.items():
+        if not mobile:
+            continue
+        device_list = "\n".join(
+            [f"{i + 1}. {name}" for i, name in enumerate(device_names)]
+        )
+        print("device list: ", device_list)
+        send_sms(
+            mobile,
+            f"Dear {mobile}, \n\nThe following devices have expired: \n{device_list}. \n\nPlease make a payment to keep your devices active. \n\n- SAR Link",
+        )
+    # expired_devices.update(is_active=False)
+    print(f"Total {count} expired devices.")
+    return {
+        "total_expired_devices": count,
+    }
 
 
 def verify_user_with_person_api_task(user_id: int):
@@ -21,9 +62,11 @@ def verify_user_with_person_api_task(user_id: int):
 
     user = get_object_or_404(User, id=user_id)
     # Call the Person API to verify the user
-    if not PEOPLE_API_URL:
-        raise ValueError("PEOPLE_API_URL is not set in the environment variables.")
-    response = requests.get(f"{PEOPLE_API_URL}/api/person/{user.id_card}")
+    if not PERSON_VERIFY_BASE_URL:
+        raise ValueError(
+            "PERSON_VERIFY_BASE_URL is not set in the environment variables."
+        )
+    response = requests.get(f"{PERSON_VERIFY_BASE_URL}/api/person/{user.id_card}")
     if response.status_code == 200:
         data = response.json()
         api_nic = data.get("nic")
@@ -33,6 +76,13 @@ def verify_user_with_person_api_task(user_id: int):
         api_atoll = data.get("atoll_en")
         api_island_name = data.get("island_name_en")
 
+        if not user.mobile or user.dob is None:
+            logger.error("User mobile or date of birth is not set.")
+            return None
+        if not user.island or user.atoll is None:
+            logger.error("User island or atoll is not set.")
+            return None
+
         logger.info(f"API nic: {api_nic}")
         logger.info(f"API name: {api_name}")
         logger.info(f"API house name: {api_house_name}")
@@ -77,6 +127,7 @@ def verify_user_with_person_api_task(user_id: int):
         else:
             user.verified = False
             user.save()
+
             send_sms(
                 user.mobile,
                 f"Dear {user.first_name} {user.last_name}, \n\nYour account registration is being processed. \n\nWe will notify you once verification is complete. \n\n - SAR Link",
diff --git a/api/views.py b/api/views.py
index 41a6b7c..5763152 100644
--- a/api/views.py
+++ b/api/views.py
@@ -31,7 +31,7 @@ from typing import cast, Dict, Any
 from django.core.mail import send_mail
 from django.db.models import Q
 from api.sms import send_otp
-
+from .tasks import add, deactivate_expired_devices
 
 # local apps import
 from .serializers import (
@@ -57,6 +57,13 @@ class ErrorMessages:
     UNDERAGE_ERROR = "You must be 18 and above to signup."
 
 
+@api_view(["GET"])
+def healthcheck(request):
+    add.delay(1, 2)
+    deactivate_expired_devices.delay()
+    return Response({"status": "Good"}, status=status.HTTP_200_OK)
+
+
 class UpdateUserWalletView(generics.UpdateAPIView):
     # Create user API view
     serializer_class = CustomUserByWalletBalanceSerializer
@@ -416,11 +423,6 @@ class UserDetailAPIView(StaffEditorPermissionMixin, generics.RetrieveAPIView):
         return Response(data)
 
 
-@api_view(["GET"])
-def healthcheck(request):
-    return Response({"status": "Good"}, status=status.HTTP_200_OK)
-
-
 @api_view(["POST"])
 @permission_classes((permissions.AllowAny,))
 def test_email(request):
diff --git a/apibase/__init__.py b/apibase/__init__.py
index e69de29..a0711ca 100644
--- a/apibase/__init__.py
+++ b/apibase/__init__.py
@@ -0,0 +1,4 @@
+# myproject/__init__.py
+from .celery import app as celery_app
+
+__all__ = ("celery_app",)
diff --git a/apibase/celery.py b/apibase/celery.py
new file mode 100644
index 0000000..3531d90
--- /dev/null
+++ b/apibase/celery.py
@@ -0,0 +1,22 @@
+import os
+
+from celery import Celery
+
+# Set the default Django settings module for the 'celery' program.
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "apibase.settings")
+
+app = Celery("apibase")
+
+# Using a string here means the worker doesn't have to serialize
+# the configuration object to child processes.
+# - namespace='CELERY' means all celery-related configuration keys
+#   should have a `CELERY_` prefix.
+app.config_from_object("django.conf:settings", namespace="CELERY")
+
+# Load task modules from all registered Django apps.
+app.autodiscover_tasks(["api", "devices"])
+
+
+@app.task(bind=True, ignore_result=True)
+def debug_task(self):
+    print(f"Request: {self.request!r}")
diff --git a/apibase/settings.py b/apibase/settings.py
index dafe0a3..ef80b65 100644
--- a/apibase/settings.py
+++ b/apibase/settings.py
@@ -363,3 +363,10 @@ PASSWORDLESS_AUTH = {
     "PASSWORDLESS_REGISTER_NEW_USERS": True,
     "PASSWORDLESS_EMAIL_NOREPLY_ADDRESS": "noreply@sarlink.net",
 }
+
+
+# CELERY CONFIGURATION
+CELERY_BROKER_URL = "redis://localhost:6379/0"  # or your Redis URL
+CELERY_ACCEPT_CONTENT = ["json"]
+CELERY_TASK_SERIALIZER = "json"
+CELERY_RESULT_BACKEND = "redis://localhost:6379/0"
diff --git a/pyrightconfig.json b/pyrightconfig.json
index ce02071..b4b408d 100644
--- a/pyrightconfig.json
+++ b/pyrightconfig.json
@@ -3,7 +3,7 @@
 	"venv": ".venv",
 	"reportMissingImports": "error",
 	"include": ["src"],
-	"typeCheckingMode": "off",
+	"typeCheckingMode": "standard",
 	"exclude": [
 		"council-api/**/migrations",
 		"**/__pycache__",