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diff --git a/MyObsidianVault/Pasted image 20241126102214.png b/MyObsidianVault/Pasted image 20241126102214.png
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diff --git a/MyObsidianVault/WebDev/2 CodeIgniter/17.) Register API.md b/MyObsidianVault/WebDev/2 CodeIgniter/17.) Register API.md
index d4a3062..8016734 100644
--- a/MyObsidianVault/WebDev/2 CodeIgniter/17.) Register API.md	
+++ b/MyObsidianVault/WebDev/2 CodeIgniter/17.) Register API.md	
@@ -14,8 +14,8 @@ class AuthController extends ResourceController
 	{
 		$rules = [
 			"username" => "required|is_unique[users.username]", 
-			"email" => "required|valid_email|is_unique[auth_identities.secret]", 
-			"password" => "required"
+			"email" => "required|valid_email|is_unique[auth_identities.secret]",  // gets written to secret field in user table
+			"password" => "required" // gets written to secret 2 field in user table
 		];
 
 		if (!$this->validate($rules)) {
@@ -43,4 +43,6 @@ class AuthController extends ResourceController
 }
 ```
 
-Note: shield stores users in auth_identies. Email address should be stored in field secret.
\ No newline at end of file
+Note: shield stores users in auth_identies. Email address should be stored in field secret.
+
+https://onlinewebtutorblog.com/codeigniter-4-restful-api-using-shield-authentication/
\ No newline at end of file
diff --git a/MyObsidianVault/WebDev/2 CodeIgniter/18.) Create login.md b/MyObsidianVault/WebDev/2 CodeIgniter/18.) Create login.md
new file mode 100644
index 0000000..81eaf2f
--- /dev/null
+++ b/MyObsidianVault/WebDev/2 CodeIgniter/18.) Create login.md	
@@ -0,0 +1,74 @@
+https://www.youtube.com/watch?v=XJHFtfQQmRs&list=PLT9miexWCpPW6Z_OXNv2d78cqCrZaPrVG&index=31
+
+https://onlinewebtutorblog.com/codeigniter-4-restful-api-using-shield-authentication/
+
+In AuthController::login:
+
+
+
+
+```php
+
+    // Post
+    public function login()
+    {
+
+        if(auth()->loggedIn()){
+            auth()->logout();
+        }
+
+        $rules = [
+            "email" => "required|valid_email",
+            "password" => "required"
+        ];
+
+        if (!$this->validate($rules)) {
+
+            $response = [
+                "status" => false,
+                "message" => $this->validator->getErrors(),
+                "data" => []
+            ];
+        } else {
+
+            // success
+            $credentials = [
+                "email" => $this->request->getVar("email"),
+                "password" => $this->request->getVar("password")
+            ];
+
+            $loginAttempt = auth()->attempt($credentials);
+
+            if (!$loginAttempt->isOK()) {
+
+                $response = [
+                    "status" => false,
+                    "message" => "Invalid login details",
+                    "data" => []
+                ];
+            } else {
+
+                // We have a valid data set
+                $userObject = new UserModel();
+
+                $userData = $userObject->findById(auth()->id());
+
+                $token = $userData->generateAccessToken("thisismysecretkey");
+
+                $auth_token = $token->raw_token; // Only available after generation
+
+                $response = [
+                    "status" => true,
+                    "message" => "User logged in successfully",
+                    "data" => [
+                        "token" => $auth_token
+                    ]
+                ];
+            }
+        }
+
+        return $this->respondCreated($response);
+    }
+
+```
+https://shield.codeigniter.com/references/authentication/tokens/