diff --git a/src/Controller/CustomerAppAPI/ApiController.php b/src/Controller/CustomerAppAPI/ApiController.php
index 577a05a6..635a3c45 100644
--- a/src/Controller/CustomerAppAPI/ApiController.php
+++ b/src/Controller/CustomerAppAPI/ApiController.php
@@ -14,6 +14,7 @@ use App\Entity\Warranty;
 use App\Entity\JobOrder;
 use App\Entity\CustomerSession;
 use App\Service\PayMongoConnector;
+use DateTime;
 
 class ApiController extends BaseApiController
 {
@@ -64,6 +65,9 @@ class ApiController extends BaseApiController
             }
         }
 
+        // update session timestamp
+        $this->updateSessionTimestamp();
+
         return [
             'is_valid' => !$error,
             'error' => $error,
@@ -173,4 +177,10 @@ class ApiController extends BaseApiController
             $this->getParameter('subscription_paymongo_secret_key'),
         );
     }
+
+    protected function updateSessionTimestamp()
+    {
+        $this->session->setDateLatestActivity(new DateTime());
+        $this->em->flush();
+    }
 }
diff --git a/src/Entity/CustomerSession.php b/src/Entity/CustomerSession.php
index a8e2d6c6..0b45c76d 100644
--- a/src/Entity/CustomerSession.php
+++ b/src/Entity/CustomerSession.php
@@ -100,6 +100,12 @@ class CustomerSession
      */
     protected $date_code_sent;
 
+    // date and time this session was last used
+    /**
+     * @ORM\Column(type="datetime", nullable=true)
+     */
+    protected $date_latest_activity;
+
     // reviews made by mobile session
     /**
      * @ORM\OneToMany(targetEntity="Review", mappedBy="mobile_session")
@@ -115,6 +121,7 @@ class CustomerSession
         $this->confirm_flag = false;
         $this->date_confirmed = null;
         $this->date_code_sent = null;
+        $this->date_latest_activity = null;
         $this->reviews = new ArrayCollection();
     }
 
@@ -270,4 +277,15 @@ class CustomerSession
     {
         return $this->reviews;
     }
+
+    public function setDateLatestActivity(DateTime $date)
+    {
+        $this->date_latest_activity = $date;
+        return $this;
+    }
+
+    public function getDateLatestActivity()
+    {
+        return $this->date_latest_activity;
+    }
 }