Increasingly, the phone number is the primary identifier for an individual. In developing markets, it’s the only identifier. Digits is a new way for your users to sign in to their apps and websites without using a password. Simple and safe to use, Digits requires only a phone number. With Friend Finding, Digits is also reinventing social graphs with the one everyone has on their phone: the address book.

1. #APIsBerlin
Build the best apps

2. REINVENTING IDENTITY AND
SOCIAL GRAPHS WITH DIGITS
#APIsBerlin — April 24, 2015

3. ROMAIN HUET
Sr. Developer Advocate
@romainhuet

4. crashes spam identity dropped frames lag
performance threading memory leaks churn
getting downloads driving installs revenue
in-app-purchases revenue monetization user feedback
validation distribution support user accounts
testing graphics icons deep links localization
internationalization data storage persistence analytics
content interest graphs stability

5. crashes spam identity dropped frames lag
performance threading memory leaks churn
getting downloads driving installs revenue
in-app-purchases revenue monetization user feedback
validation distribution support user accounts
testing graphics icons deep links localization
internationalization data storage persistence analytics
content interest graphs stability

8. IDENTITY
STABILITY
DISTRIBUTION
REVENUE

16. Individuals Using the Internet, 2005-2014 (ITU)People(Millions)
0
750
1500
2250
3000
2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
Internet Users

17. 150M
150M
190M
630M
US
EUROPE
ASIA
LATAM
120M
MENA
940M

18. Sign in with

19. @romainhuetRomain Huet
Twitter, Inc.
Sr. Developer Advocate
romain@twitter.com
+49 173 0001337+49 173 0001337

20. @romainhuetRomain Huet
Twitter, Inc.
Sr. Developer Advocate
romain@twitter.com
+49 173 0001337
+49 173 0001337

24. SMS API SMS Aggregator
$

25. SMS API SMS Aggregator
SMS API SMS Aggregator
¥$

26. SMS API
SMS API

27. SMS API SMS Aggregator
SMS API SMS Aggregator
¥$
£

28. ¥$
€£
SMS API SMS Aggregator
SMS API SMS Aggregator
SMS API SMS Aggregator

29. COST PER MILLION VERIFICATIONS
Brazil $50,000
United Kingdom $33,000
Germany $60,000
Saudi Arabia $20,000
United States $5,000

31. POWERED BY

35. INITIALIZE FABRIC
import Fabric
import TwitterKit
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
func application(application: UIApplication!,
didFinishLaunchingWithOptions launchOptions: NSDictionary!) -> Bool {
}
}
Fabric.with([Twitter()])
return true

36. INVOKE DIGITS
import TwitterKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
let authenticateButton = DGTAuthenticateButton(authenticationCompletion: {
(session: DGTSession!, error: NSError!) in
// Store the Digits session in your backend.
})
authenticateButton.center = self.view.center
self.view.addSubview(authenticateButton)

37. DIGITS SESSION
let button = DGTAuthenticateButton { (session, error) in
if session != nil {
}
}
println(session.userID)
// “2834242790”
println(session.authToken)
// “2834242790-5gsoS8ABHybf7SfsWgPXhqmDet843uleJM8hsVa”
println(session.authTokenSecret)
// “xLDdKyEc1SQDrtyobMWZ14dbnL224e4PKxAeGPu4Ibzew”
println(session.phoneNumber)
// “+491730001337”

38. EXTEND YOUR PROFILES
digitsUserID name profilePic
29384805 … …
23028702 … …
29484500 … …
29390084 … …

40. USE YOUR OWN BUTTON
import TwitterKit
class ViewController: UIViewController {
@IBAction func didTapButton(sender: AnyObject) {
}
}
Digits.sharedInstance().authenticateWithCompletion { (session, error) in
// Inspect the Digits session/error objects.
}

41. THEME YOUR DIGITS EXPERIENCE
import TwitterKit
class ViewController: UIViewController {
@IBAction func didTapButton(sender: AnyObject) {
}
}
let digitsAppearance = DGTAppearance()
digitsAppearance.backgroundColor = UIColor.blackColor()
digitsAppearance.accentColor = UIColor.greenColor()
Digits.sharedInstance().authenticateWithDigitsAppearance(digitsAppearance,
viewController: nil, title: nil) { (session, error) in
// Inspect the Digits session/error objects.
}

44. DEMO
#APIsBerlin

45. ADD DIGITS TO YOUR WEB APP
<!DOCTYPE html>
<html>
<head>
<title>Welcome to Cannonball</title>
<meta charset="UTF-8">
</head>
<body>
<button id="digits-btn">Sign In with Phone</button>
<script id="digits-sdk" src="https://cdn.digits.com/1/sdk.js" async></script>
</body>
</html>

46. ADD DIGITS TO YOUR WEB APP
<script>
document.getElementById('digits-sdk').onload = function() {
};
</script>
// Set a click event listener on the button.
document.getElementById('digits-btn').addEventListener("click", onLoginButtonClick);
// Implement the login button callback and handle the response.
function onLoginButtonClick() {
Digits.logIn().done(onLogin).fail(onLoginFailure);
}
// Initialize Digits and check if the user is already logged into Digits.
Digits.init({ consumerKey: "o0gzicSS27GgtEJsu7wT442SG" }).done(function() {
Digits.getLoginStatus().done(onLoginStatus);
});

47. VERIFY A DIGITS TOKEN & RETRIEVE USER INFO
// Parse the OAuth Echo headers.
var oAuthEchoHeaders = loginResponse.oauth_echo_headers;
var verifyData = {
credentials: oAuthEchoHeaders['X-Verify-Credentials-Authorization'],
apiUrl: oAuthEchoHeaders['X-Auth-Service-Provider']
};
// Post this data and from your server, securely request over SSL
// the user information including the phone number.
$.post('/verify', verifyData).done(function() {
// Update the user interface with user information.
});
<script>
// Validate the authentication and sign the user in.
function onLogin(loginResponse) {
}
</script>

48. 216countries
28languages
216 28

49. freefree

50. POWERED BY

51. WHAT’S NEW?

54. 1530531-0k4UA
v5fyP1zVNFvtT
LGSzjnVHuCKc
K3xEZ0MNKX8i

58. FIND FRIENDS
// Initialize the Find Friends button from the view.
findFriendsButton = (Button) findViewById(R.id.find_your_friends_button);
// Set a listener on the Find Friends button.
findFriendsButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// Start uploading the Address Book.
Digits.getInstance().getContactsClient().startContactsUpload();
}
});

59. FIND FRIENDS
// Retrieve the contact matches.
Digits.getInstance().getContactsClient().lookupContactMatches(null, null,
new ContactsCallback<Contacts>() {
});
@Override
public void success(Result<Contacts> result) {
if (result.data.users != null) {
// Process contacts data.
}
}
@Override
public void failure(TwitterException exception) {
// Show error.
}

60. WHAT’S NEW?

61. As we continue to grow internationally, Digits
is extremely helpful. Many of our customers
prefer to verify their accounts via phone, so
Digits is the easiest solution for them and us.”
“
- Sean Smith,
Senior Director, Client Engineering, Rdio

63. Grow Faster

65. Thank You