diff --git a/server/SHServ/Entities/Device.php b/server/SHServ/Entities/Device.php
new file mode 100644
index 0000000..0dd8620
--- /dev/null
+++ b/server/SHServ/Entities/Device.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace SHServ\Entities;
+
+use \SHServ\Entities\DeviceAuth;
+
+class Device extends \SHServ\Middleware\Entity {
+	public static $table_name = "devices";
+	protected static $fields = [
+		"id", "alias", "name", "device_type", "device_name", "device_ip",
+		"device_mac", "device_hard_id", "firmware_version", "connection_state", 
+		"state", "description", "last_contact", "create_at", "update_at"
+	];
+
+	protected $device_auth;
+
+	public function __construct(Int $id, Array $data = []){
+		parent::__construct(
+			self::$table_name,
+			$id,
+			$data
+		);
+	}
+
+	public function remove() {
+		$this -> state = "removed";
+		return $this -> update();
+	}
+
+	public function get_auth(): DeviceAuth | null {
+		if($this -> device_auth) {
+			return $this -> device_auth;
+		}
+
+		$result = app() -> thin_builder -> select(
+			DeviceAuth::$table_name, 
+			DeviceAuth::get_fields(), 
+			[ ["device_id", "=", $this -> id()] ]
+		);
+
+		if(!$result) {
+			return null;
+		}
+
+		$this -> device_auth = new DeviceAuth($result[0]["id"], $result[0]);
+
+		return $this -> device_auth ?? null;
+	}
+}
\ No newline at end of file
diff --git a/server/SHServ/Entities/DeviceAuth.php b/server/SHServ/Entities/DeviceAuth.php
new file mode 100644
index 0000000..80992e4
--- /dev/null
+++ b/server/SHServ/Entities/DeviceAuth.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace SHServ\Entities;
+
+class Device extends \SHServ\Middleware\Entity {
+	public static $table_name = "device_auth";
+	protected static $fields = [
+		"id", "device_id", "device_token", "server_token", "state", "create_at"
+	];
+
+	public function __construct(Int $id, Array $data = []){
+		parent::__construct(
+			self::$table_name,
+			$id,
+			$data
+		);
+	}
+
+	public function remove() {
+		return $this -> remove_entity();
+	}
+
+	public function kill() {
+		$this -> state = "killed";
+		return $this -> update();
+	}
+}
\ No newline at end of file
diff --git a/server/SHServ/Models/Devices.php b/server/SHServ/Models/Devices.php
index 59ee3be..b116d05 100644
--- a/server/SHServ/Models/Devices.php
+++ b/server/SHServ/Models/Devices.php
@@ -3,7 +3,140 @@
 namespace SHServ\Models;
 
 use \SHServ\Tools\DeviceScanner;
+use \SHServ\Tools\DeviceAPI\Base;
+use \SHServ\Entities\Device;
+// use \SHServ\Entities\DeviceAuth;
 
 class Device extends \SHServ\Middleware\Model {
-	
+	public function connect_new_device(String $device_ip, String $alias = "", String $name = "") {
+		// validate device
+
+		$device_api = new Base($device_ip);
+		$device_info = $device_api -> get_about();
+		if(!$device_info["data"]) {
+			return false;
+		}
+
+		if($device_info["status"] != "setup") {
+			return false;
+		}
+
+		// create in table devices
+
+		$device_id = app() -> thin_builder -> insert(Device::$table_name, [
+			"alias" => $alias,
+			"name" => $name,
+			"device_type" => $device_info["data"]["device_type"],
+			"device_name" => $device_info["data"]["device_name"],
+			"device_ip" => $device_info["data"]["ip_address"],
+			"device_mac" => $device_info["data"]["mac_address"],
+			"device_hard_id" => $device_info["data"]["device_id"],
+			"firmware_version" => $device_info["data"]["firmware_version"],
+			"connection_state" => "active",
+			"state" => "active",
+			"description" => "",
+			"last_contact" => date("Y-m-d H:i:s"),
+			"create_at" => date("Y-m-d H:i:s")
+		]);
+
+		$device = $device_id ? new Device($device_id) : null;
+
+		if(!$device) {
+			return false;
+		}
+
+		// generate token
+		
+		$device_token = app() -> utils() -> generate_token(16); 
+		
+		// create in table device_auth
+		
+		$device_auth = app() -> thin_builder -> insert(DeviceAuth::$table_name, [
+			"device_id" => $device -> id(),
+			"device_token" => $device_token,
+			"server_token" => "",
+			"state" => "active"
+			"create_at" => date("Y-m-d H:i:s")
+		]);
+
+		if(!$device_auth) {
+			return false;
+		}
+
+		return $device;
+	}
+
+	public function remove_device(int $device_id): bool {
+		// create device entity
+		
+		$result = app() -> thin_builder -> select(
+			Device::$table_name, 
+			Device::get_fields(), 
+			[ ["id", "=", $device_id] ]
+		);
+
+		if(!$result) {
+			return false;
+		}
+
+		$device = new Device($result[0]["id"], $result[0]);
+
+		// reset device
+		
+		if(!$device -> reset()) {
+			return false;
+		}
+		
+		// state killed in device_auth table
+		
+		$device_auth = $device -> get_auth();
+		if(!$device_auth) {
+			return false;
+		}
+
+		$device_auth -> kill();
+
+		// remove from devices
+		
+		return $device -> remove();
+	}
+
+	public function get_device_list(): Array {
+		// get from db table devices with state = "active"
+		
+		$raw_devices = app() -> thin_builder -> select(
+			Device::$table_name, 
+			Device::get_fields(), 
+			[ ["state", "=", "active"] ],
+			[ "id" ],
+			"DESC"
+		);
+
+		if(!$raw_devices) {
+			return [];
+		}
+
+		// wrapped result to Device entity
+		
+		$devices = [];
+		foreach($raw_devices as $i => $raw_device) {
+			$devices[] = new Device($raw_device["id"], $raw_device);
+		}
+
+		return $devices;
+	}
+
+	public function get_unregistered_devices(): Array {
+		return $this -> scanning_localnet(FCONF["device_ip_range"][0], FCONF["device_ip_range"][1], "setup");
+	}
+
+	public function scanning_localnet(String $from_ip, String $to_ip, String $status = ""): Array {
+		$device_scanner = new DeviceScanner();
+		$devices = $device_scanner -> scan_range($from_ip, $to_ip);
+		if(!$status) {
+			return $devices;
+		}
+
+		return $device_scanner -> filter_by_status($devices, $status);
+	}
 }
\ No newline at end of file
diff --git a/server/SHServ/Utils.php b/server/SHServ/Utils.php
index b2dca67..748c465 100644
--- a/server/SHServ/Utils.php
+++ b/server/SHServ/Utils.php
@@ -133,4 +133,11 @@
 
 		return null;
 	}
+
+	public function generate_token(int $length = 16): String {
+    $bytes = random_bytes((int)ceil($length / 2));
+    $token = bin2hex($bytes);
+
+    return substr($token, 0, $length);
+	}
 }
\ No newline at end of file
diff --git a/server/SHServ/config.php b/server/SHServ/config.php
index 78e1e9b..fb0863c 100644
--- a/server/SHServ/config.php
+++ b/server/SHServ/config.php
@@ -24,4 +24,6 @@
 	"error_handler" => [
 		"important_errors" => ["E_WARNING", "E_ERROR", "E_CORE_ERROR", "EXCEPTION"]
 	],
+
+	"device_ip_range" => [ "192.168.68.2", "192.168.68.254" ]
 ]; 
\ No newline at end of file