Lock v2 for iOS

You're looking at the documentation for the easiest way of securing your iOS apps!

Lock is an embeddable login form, which is configurable to your needs and ready for use in your mobile applications. It's easier than ever to add social identity providers to Lock, as well, allowing your users to login seamlessly using whichever providers make sense for your application. Check out the basic usage guide below for more information!

Heads up! This document uses the latest version of Lock for iOS (version 2). If you are still using version 1, check out the Lock v1 to Lock v2 migration guide, or the Lock v1 Documentation.


  • iOS 9 or later
  • Xcode 8
  • Swift 3.0


You have two choices for installation - Carthage or CocoaPods. You will need to install Lock for use logging in and signing up users. If you wish to access user profile information, you will also need the Auth0 library.

Installation Using Carthage

Add the following line to your Cartfile:

github "auth0/Lock.iOS-OSX" ~> 2.0
github "auth0/Auth0.swift" ~> 1.2

Then run carthage bootstrap.

Installation Using CocoaPods

Add the following line to your Podfile:

pod "Lock", "~> 2.0"
pod "Auth0", "~> 1.2"

Then run pod install.


Integrate with your Application

Lock needs to be notified when the application is asked to open a URL. You can do this in the AppDelegate file.

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any]) -> Bool {
  return Lock.resumeAuth(url, options: options)

Import Lock

Import Lock wherever you'll need it

import Lock
import Auth0

Auth0 Credentials

In order to use Lock you need to provide your Auth0 Client Id and Domain, which can be found in your Auth0 Dashboard, under your Client's settings.

In your application bundle you can add a plist file named Auth0.plist that will include your credentials with the following format.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">

Implementation of Lock

Lock Classic handles authentication using Database, Social, and Enterprise connections.

To show Lock, add the following snippet in your UIViewController.

    // withConnections, withOptions, withStyle, etc
    .onAuth { credentials in
      // Save the Credentials object
    .present(from: self)

Use Auth0.Swift Library to access user profile

To access user profile information, you will need to use the Auth0.Swift library:

guard let accessToken = credentials.accessToken else { return }
    .userInfo(token: accessToken)
    .start { result in
        switch result {
        case .success(let profile):
            // You've got a UserProfile object
        case .failure(let error):
            // You've got an error

Check out the Auth0.Swift Library Documentation for more information about its uses.

Specify Connections

Lock will automatically load the connections configured for your client. If you wish to override the default behavior, you can manually specify which connections it should display to users as authentication options. This can be done by calling the method and supplying a closure that can specify the connection(s).

Adding a database connection:

.withConnections {
    connections.database(name: "Username-Password-Authentication", requiresUsername: true)

Adding multiple social connections:

.withConnections {
    connections.social(name: "facebook", style: .Facebook)
    connections.social(name: "google-oauth2", style: .Google)

Styling and Customization

Lock provides many styling options to help you apply your own brand identity to Lock using withStyle. For example, changing the primary color and header text of your Lock widget:

Customize your title, logo, and primary color

.withStyle {
  $0.title = "Company LLC"
  $0.logo = LazyImage(named: "company_logo")
  $0.primaryColor = UIColor(red: 0.6784, green: 0.5412, blue: 0.7333, alpha: 1.0)

Styling Customization Options

You can see the complete set of styling options to alter the appearance of Lock for your app in the Customization Guide.

Configuration Options

There are numerous options to configure Lock's behavior. Below is an example of Lock configured to allow it to be closable, to limit it to only usernames (and not emails), and to only show the Login and Reset Password screens.

    .withOptions {
    	$0.closable = true
  		$0.usernameStyle = [.Username]
  		$0.allow = [.Login, .ResetPassword]

Behavior Configuration Options

You can see the complete set of behavior configuration options to alter the way Lock works for your app in the Configuration Guide.


Lock provides options to easily turn on and off logging capabilities, as well as adjust other logging related settings. The example below displays logging turned on, but take a look at the Behavior Configuration Options page for more information about logs in Lock for iOS v2.

    .withOptions {
        $0.logLevel = .all
        $0.logHttpRequest = true

Future roadmap of Lock v2 for iOS

  • Native Authentication with third party SDKs (Facebook, Google, Twitter)
  • 1Password support
  • Passwordless Authentication (SMS & Email)
  • Secure Token storage and automatic token refresh
  • Remember me like feature using TouchID
  • Universal Link support for browser based Auth
  • Improved UI Styling
  • Bundle more i18n translation in Lock.framework

Other Resources