diff --git a/session.inc.php b/session.inc.php
index 94f0fc9..18509d7 100644
--- a/session.inc.php
+++ b/session.inc.php
@@ -51,6 +51,7 @@ class SessionConfig
 class Session
 {
   const RUN_SLEEP = 3;
+  const IGNORE_DEVICE_TTL = 300;
 
   public string $name;
   public SessionConfig $conf;
@@ -111,18 +112,30 @@ class Session
 
   function getDevices() : array
   {
-    $devices = array_diff(
-      $this->device_pool->get(), 
-      $this->ignored_devices
-    );
-    return $devices;
+    $this->_checkIgnoredDevices();
+
+    $connected_devices = $this->device_pool->get();
+    $actual_devices = array_diff($connected_devices, array_keys($this->ignored_devices));
+
+    return $actual_devices;
+  }
+
+  function _checkIgnoredDevices()
+  {
+    //let's remove from ignored devices devices which were ignored for some time 
+    $devices = array_keys($this->ignored_devices);
+    foreach($devices as $device)
+    {
+      if(time() - $this->ignored_devices[$device] > self::IGNORE_DEVICE_TTL)
+        unset($this->ignored_devices[$device]);
+    }
   }
 
   function ignoreDevice(string $device, string $reason)
   {
     err("Ignoring device *$device*: $reason");
 
-    $this->ignored_devices[] = $device;
+    $this->ignored_devices[$device] = time();
   }
 
   function incBogusDevice(string $device)