diff --git a/src/Http/Session.php b/src/Http/Session.php
index 721304a6..548b5dbc 100644
--- a/src/Http/Session.php
+++ b/src/Http/Session.php
@@ -28,6 +28,12 @@ class Session extends Nette\Object
 	/** Default file lifetime is 3 hours */
 	const DEFAULT_FILE_LIFETIME = 10800;
 
+	/** Default flash lifetime */
+	const DEFAULT_FLASH_LIFETIME = '10 seconds';
+
+	/** Session ID in URL */
+	const FLASH_KEY = '_fid';
+
 	/** @var bool  has been session ID regenerated? */
 	private $regenerated;
 
@@ -63,11 +69,17 @@ class Session extends Nette\Object
 	/** @var IResponse */
 	private $response;
 
+	/** @var string|NULL */
+	private $flashId;
+
 
 	public function __construct(IRequest $request, IResponse $response)
 	{
 		$this->request = $request;
 		$this->response = $response;
+		if (is_string($flashId = $request->getQuery(self::FLASH_KEY))) {
+			$this->flashId = $flashId;
+		}
 	}
 
 
@@ -348,6 +360,33 @@ public function clean()
 	}
 
 
+	/********************* flash sections ****************d*g**/
+
+
+	/**
+	 * @return string|NULL
+	 */
+	public function getFlashId()
+	{
+		return $this->flashId;
+	}
+
+
+	/**
+	 * Returns specified flash section and creates flash ID if doesn't exist.
+	 * @param  string
+	 * @return SessionSection
+	 */
+	public function getFlashSection($section)
+	{
+		if (!$this->flashId) {
+			$this->flashId = Nette\Utils\Random::generate(4);
+		}
+		return $this->getSection("$section/$this->flashId")
+			->setExpiration(self::DEFAULT_FLASH_LIFETIME);
+	}
+
+
 	/********************* configuration ****************d*g**/
 
 
diff --git a/tests/Http/Session.flash.phpt b/tests/Http/Session.flash.phpt
new file mode 100644
index 00000000..bec4c386
--- /dev/null
+++ b/tests/Http/Session.flash.phpt
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * Test: Nette\Http\Session flash sections.
+ */
+
+use Nette\Http\Session,
+	Nette\Http\SessionSection,
+	Tester\Assert;
+
+
+require __DIR__ . '/../bootstrap.php';
+
+
+test(function() {
+	$session = new Session(new Nette\Http\Request(new Nette\Http\UrlScript), new Nette\Http\Response);
+
+	Assert::null( $session->getFlashId() );
+
+	$section = $session->getFlashSection('f');
+	Assert::type( 'Nette\Http\SessionSection', $section );
+
+	Assert::match( '%a%', $session->getFlashId() );
+});
+
+
+test(function() {
+	$session = new Session(new Nette\Http\Request(new Nette\Http\UrlScript('?_fid=123')), new Nette\Http\Response);
+	Assert::same( '123', $session->getFlashId() );
+});
+
+
+test(function() {
+	$session = new Session(new Nette\Http\Request(new Nette\Http\UrlScript('?_fid[]=123')), new Nette\Http\Response);
+	Assert::null( $session->getFlashId() );
+});