diff --git a/src/Methods/Shh/HasIdentity.php b/src/Methods/Shh/HasIdentity.php
new file mode 100644
index 0000000..b166332
--- /dev/null
+++ b/src/Methods/Shh/HasIdentity.php
@@ -0,0 +1,61 @@
+<?php
+
+/**
+ * This file is part of web3.php package.
+ * 
+ * (c) Kuan-Cheng,Lai <alk03073135@gmail.com>
+ * 
+ * @author Peter Lai <alk03073135@gmail.com>
+ * @license MIT
+ */
+
+namespace Web3\Methods\Shh;
+
+use InvalidArgumentException;
+use Web3\Methods\EthMethod;
+use Web3\Validators\IdentityValidator;
+
+class HasIdentity extends EthMethod
+{
+    /**
+     * validators
+     * 
+     * @var array
+     */
+    protected $validators = [
+        IdentityValidator::class
+    ];
+
+    /**
+     * inputFormatters
+     * 
+     * @var array
+     */
+    protected $inputFormatters = [];
+
+    /**
+     * outputFormatters
+     * 
+     * @var array
+     */
+    protected $outputFormatters = [];
+
+    /**
+     * defaultValues
+     * 
+     * @var array
+     */
+    protected $defaultValues = [];
+
+    /**
+     * construct
+     * 
+     * @param string $method
+     * @param array $arguments
+     * @return void
+     */
+    // public function __construct($method='', $arguments=[])
+    // {
+    //     parent::__construct($method, $arguments);
+    // }
+}
\ No newline at end of file
diff --git a/src/Shh.php b/src/Shh.php
index 7e6c1f2..e1ccee2 100644
--- a/src/Shh.php
+++ b/src/Shh.php
@@ -38,7 +38,7 @@ class Shh
      * @var array
      */
     private $allowedMethods = [
-        'shh_version'
+        'shh_version', 'shh_newIdentity', 'shh_hasIdentity'
     ];
 
     /**
diff --git a/test/unit/ShhApiTest.php b/test/unit/ShhApiTest.php
index 36d2445..9521b63 100644
--- a/test/unit/ShhApiTest.php
+++ b/test/unit/ShhApiTest.php
@@ -59,4 +59,59 @@ class ShhApiTest extends TestCase
             $this->assertEquals(mb_strlen($identity), 132);
         });
     }
+
+    /**
+     * testHasIdentity
+     * 
+     * @return void
+     */    
+    public function testHasIdentity()
+    {
+        $shh = $this->shh;
+        $newIdentity = '0x' . implode('', array_fill(0, 120, '0'));
+
+        $shh->hasIdentity($newIdentity, function ($err, $hasIdentity) {
+            if ($err !== null) {
+                return $this->fail($err->getMessage());
+            }
+            $this->assertFalse($hasIdentity);
+        });
+
+        $shh->newIdentity(function ($err, $identity) use (&$newIdentity) {
+            if ($err !== null) {
+                return $this->fail($err->getMessage());
+            }
+            $newIdentity = $identity;
+
+            $this->assertEquals(mb_strlen($identity), 132);
+        });
+
+        $shh->hasIdentity($newIdentity, function ($err, $hasIdentity) {
+            if ($err !== null) {
+                return $this->fail($err->getMessage());
+            }
+            $this->assertTrue($hasIdentity);
+        });
+    }
+
+    /**
+     * testWrongParam
+     * We transform data and throw invalid argument exception
+     * instead of runtime exception.
+     * 
+     * @return void
+     */
+    public function testWrongParam()
+    {
+        $this->expectException(RuntimeException::class);
+
+        $shh = $this->shh;
+
+        $shh->hasIdentity('0', function ($err, $hasIdentity) {
+            if ($err !== null) {
+                return $this->fail($err->getMessage());
+            }
+            $this->assertTrue(true);
+        });
+    }
 }
\ No newline at end of file
diff --git a/test/unit/ShhBatchTest.php b/test/unit/ShhBatchTest.php
index 0af2786..02ad831 100644
--- a/test/unit/ShhBatchTest.php
+++ b/test/unit/ShhBatchTest.php
@@ -47,4 +47,28 @@ class ShhBatchTest extends TestCase
             $this->assertEquals(mb_strlen($data[1]), 132);
         });
     }
+
+    /**
+     * testWrongParam
+     * 
+     * @return void
+     */
+    public function testWrongParam()
+    {
+        $this->expectException(RuntimeException::class);
+
+        $shh = $this->shh;
+
+        $shh->batch(true);
+        $shh->version();
+        $shh->hasIdentity('0');
+
+        $shh->provider->execute(function ($err, $data) {
+            if ($err !== null) {
+                return $this->fail('Got error!');
+            }
+            $this->assertTrue(is_string($data[0]));
+            $this->assertFalse($data[1]);
+        });
+    }
 }
\ No newline at end of file