diff --git a/server/SHServ/Controllers/DevicesRESTAPIController.php b/server/SHServ/Controllers/DevicesRESTAPIController.php
index 175b929..6f942f5 100644
--- a/server/SHServ/Controllers/DevicesRESTAPIController.php
+++ b/server/SHServ/Controllers/DevicesRESTAPIController.php
@@ -194,7 +194,6 @@
 
 		if($device -> connection_status != "active") {
 			$device -> connection_status = "active";
-			$device -> last_contact = date("Y-m-d H:i:s");
 			$device -> update();
 		}
 
diff --git a/server/SHServ/Controllers/EventsController.php b/server/SHServ/Controllers/EventsController.php
index a7247d0..bc22ce7 100644
--- a/server/SHServ/Controllers/EventsController.php
+++ b/server/SHServ/Controllers/EventsController.php
@@ -26,6 +26,8 @@
 			return $this -> utils() -> response_error("error_of_device_auth");
 		}
 
+		$device -> touch_last_contact();
+
 		ignore_user_abort(true);
 		set_time_limit(10);
 
diff --git a/server/SHServ/Entities/Device.php b/server/SHServ/Entities/Device.php
index e34ee6e..e2849d4 100644
--- a/server/SHServ/Entities/Device.php
+++ b/server/SHServ/Entities/Device.php
@@ -92,6 +92,10 @@
 			$this -> device_api_instance -> set_local_token($this -> auth() -> device_token);
 		}
 
+		$this -> device_api_instance -> set_on_success_callback(function() {
+			$this -> touch_last_contact();
+		});
+
 		return $this -> device_api_instance ?? null;
 	}
 
@@ -113,4 +117,9 @@
 	public function ping() {
 		return app() -> utils -> fast_ping_tcp($this -> device_ip);
 	}
+
+	public function touch_last_contact(): void {
+		$this -> last_contact = date("Y-m-d H:i:s");
+		$this -> update();
+	}
 }
diff --git a/server/SHServ/Tools/DeviceAPI/Base.php b/server/SHServ/Tools/DeviceAPI/Base.php
index e3bee9a..04e7e19 100644
--- a/server/SHServ/Tools/DeviceAPI/Base.php
+++ b/server/SHServ/Tools/DeviceAPI/Base.php
@@ -8,6 +8,7 @@
 	private ?string $token;
 	private float $connect_timeout;
 	private float $timeout;
+	private $on_success_callback;
 	private const MAX_RETRIES = 3;
 	private const RETRY_BACKOFF_MS = 100;
 
@@ -38,6 +39,13 @@
 	}
 
 	/**
+	 * Установить callback, который вызывается после успешного HTTP-ответа от устройства.
+	 */
+	public function set_on_success_callback(callable $callback): void {
+		$this->on_success_callback = $callback;
+	}
+
+	/**
 	 * GET /about (доступен всегда, без токена).
 	 */
 	public function get_about(): array {
@@ -243,6 +251,10 @@
 
 		curl_close($ch);
 
+		if ($http_code > 0 && $this->on_success_callback !== null) {
+			($this->on_success_callback)();
+		}
+
 		$raw_headers = substr($raw_response, 0, $header_size);
 		$raw_body    = substr($raw_response, $header_size);