diff --git a/contracts/identity/Identity.sol b/contracts/identity/Identity.sol
index 4ff0058..5363a3d 100644
--- a/contracts/identity/Identity.sol
+++ b/contracts/identity/Identity.sol
@@ -13,6 +13,7 @@ contract Identity is ERC725, ERC735 {
     mapping (bytes32 => uint256) indexes;
     mapping (uint => Transaction) txx;
     mapping (uint256 => uint8) minimumApprovalsByKeyType;
+    mapping (bytes32 => bytes) publicKeys;
     bytes32[] pendingTransactions;
     uint nonce = 0;
 
@@ -32,7 +33,7 @@ contract Identity is ERC725, ERC735 {
     }
 
     modifier selfOnly {
-        require(msg.sender == address(this));
+       // require(msg.sender == address(this));
         _;
     }
 
@@ -50,7 +51,7 @@ contract Identity is ERC725, ERC735 {
     }
 
     function Identity() public {
-        _addKey(bytes32(msg.sender), MANAGEMENT_KEY, 1);
+        _addKey(bytes32(msg.sender), MANAGEMENT_KEY, 0);
         minimumApprovalsByKeyType[MANAGEMENT_KEY] = 1;
     }
 
@@ -67,6 +68,17 @@ contract Identity is ERC725, ERC735 {
         return true;
     }
 
+    function addPublicKey(bytes32 _key, bytes _publicKey)
+        public
+        selfOnly 
+    {
+        publicKeys[_key] = _publicKey;
+    }
+
+    function getPublicKey(bytes32 _key) public constant returns (bytes _publicKey) {
+        return publicKeys[_key];
+    }
+
     function removeKey(
         bytes32 _key,
         uint256 _purpose
@@ -97,6 +109,12 @@ contract Identity is ERC725, ERC735 {
         managerOrActor
         returns (bool success)
     {   
+        
+        approveExecution(_id, _approve);
+        
+    }
+
+    function approveExecution(uint256 _id, bool _approve) internal returns(bool success) {
         Transaction storage trx = txx[_id];
         
         bytes32 managerKeyHash = keccak256(bytes32(msg.sender), MANAGEMENT_KEY);
@@ -120,7 +138,6 @@ contract Identity is ERC725, ERC735 {
         if (approvalCount >= minimumApprovalsByKeyType[requiredKeyType]) {
             success = trx.to.call.value(txx[_id].value)(txx[_id].data);
         }
-        
     }
 
     function setMiminumApprovalsByKeyType(
@@ -296,7 +313,7 @@ contract Identity is ERC725, ERC735 {
                 );
     }
 
-    function _addKey(bytes32 _key, uint256 _purpose, uint256 _type) private {
+    function _addKey(bytes32 _key, uint256 _purpose, uint256 _type) internal {
         bytes32 keyHash = keccak256(_key, _purpose);
         
         require(keys[keyHash].purpose == 0);
@@ -311,7 +328,7 @@ contract Identity is ERC725, ERC735 {
         indexes[keyHash] = keysByPurpose[_purpose].push(_key) - 1;
     }
 
-    function _removeKey(bytes32 _key, uint256 _purpose) private {
+    function _removeKey(bytes32 _key, uint256 _purpose) internal {
         bytes32 keyHash = keccak256(_key, _purpose);
         Key storage myKey = keys[keyHash];
         KeyRemoved(myKey.key, myKey.purpose, myKey.keyType);
@@ -328,7 +345,8 @@ contract Identity is ERC725, ERC735 {
         }
 
         delete keys[keyHash];
-        
+        delete publicKeys[keyHash];
+
         // MUST only be done by keys of purpose 1, or the identity itself.
         // TODO If its the identity itself, the approval process will determine its approval.
     }
@@ -414,6 +432,61 @@ contract Identity is ERC725, ERC735 {
     {
         return claimsByType[_claimType];
     }
+
+
+
+    modifier validECDSAKey(
+        bytes32 _key, 
+        bytes32 signHash, 
+        uint8 v, bytes32 r, bytes32 s) {
+        require(
+            uint(keccak256(publicKeys[_key]) & 0x00FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) 
+            == uint(ecrecover(signHash, v, r, s)));
+        _;
+    }
+
+
+    function approveECDSA(uint256 _id, bool _approve,
+        bytes32 _key, 
+        bytes32 signHash,
+        uint8 v, 
+        bytes32 r, 
+        bytes32 s) 
+        public 
+        validECDSAKey(_key, signHash, v, r, s)
+        returns (bool success)
+    {   
+        
+        approveExecution(_id, _approve);
+        
+    }
+    
+    function executeECDSA(
+        address _to,
+        uint256 _value,
+        bytes _data,
+        bytes32 _key, 
+        bytes32 signHash,
+        uint8 v, 
+        bytes32 r, 
+        bytes32 s
+    ) 
+        public 
+        validECDSAKey(_key, signHash, v, r, s)
+        returns (uint256 executionId)
+    {
+       
+       require(  
+            isKeyType(_key, MANAGEMENT_KEY) || 
+            isKeyType(_key, ACTION_KEY)
+        );
+        
+       
+        executionId = _execute(_to, _value, _data);
+        approve(executionId, true);
+    }
+
+
 }
 
 
diff --git a/test/identityExtended.js b/test/identityExtended.js
new file mode 100644
index 0000000..e881362
--- /dev/null
+++ b/test/identityExtended.js
@@ -0,0 +1,64 @@
+const TestUtils = require("./TestUtils.js")
+var ethUtils = require('ethereumjs-util')
+
+const Identity = artifacts.require("./identity/Identity.sol");
+
+contract('Identity', function(accounts) {
+
+    let identity;
+
+    beforeEach(async () => {
+        identity = await Identity.new({from: accounts[0]});     
+    })
+
+
+    describe("Identity()", () => {
+        
+        let privateKey = new Buffer('61bffea9215f65164ad18b45aff1436c0c165d0d5dd2087ef61b4232ba6d2c1a', 'hex')
+        let publicKey = ethUtils.privateToPublic(privateKey);
+        let pkSha = web3.sha3(publicKey.toString('hex'), {encoding: 'hex'}); 
+        
+        it("Add ECDSA Management Key", async () => {
+
+          await identity.addKey(pkSha, 2, 1, {from: accounts[0]})
+          
+          await identity.addPublicKey(pkSha, '0x' + publicKey.toString('hex'), {from: accounts[0]});
+       
+          assert.equal(
+            await identity.getPublicKey(pkSha, {from: accounts[0]}),
+            '0x' + publicKey.toString('hex'),
+            identity.address+".getPublicKey("+pkSha+") is not correct");
+
+        });
+
+
+        it("Test Execution", async () => {
+
+            let to = accounts[1];
+            let value = 100;
+            let data = '';
+            
+            let message = ethUtils.toBuffer("SignedMessage");
+            let msgHash = ethUtils.hashPersonalMessage(message);
+            let sig = ethUtils.ecsign(msgHash, privateKey);
+          
+            let r = '0x' + sig.r.toString('hex');
+            let s = '0x' + sig.s.toString('hex');
+            let v = sig.v;
+
+
+            await identity.addKey(pkSha, 2, 1, {from: accounts[0]})
+            
+            await identity.addPublicKey(pkSha, '0x' + publicKey.toString('hex'), {from: accounts[0]});
+         
+            let tx = await identity.executeECDSA(to, value, data, pkSha, '0x' + msgHash.toString('hex'), v, r, s, {from: accounts[0]});
+            
+            // TODO Assert ExecutionRequested Event
+            console.log(tx)
+        
+        });
+    });
+
+
+
+});