This speech was held during the Droidcon Eastern Europe / Romania in Bucharest 2013. It highlights how payments work, which different kind of payments and monetization strategies work and how to apply them best to your Android application.

1. MOBILE PAYMENTS
… taking the friction out of your app
TIM MESSERSCHMIDT
@SeraAndroid

2. Technical Evangelist
at PayPal

3. Developer Experience:
developer.paypal.com

6. Sender Receiver
Transaction

7. Sender Receiver
Transaction
Item /
Service

8. Secure
Easy
Fast

9. Secure
Easy
Fast

10. Secure
Easy
Fast

11. One time payments
Pre-Authorized payments
Subscriptions
Billing Agreements

12. One time payments
Pre-Authorized payments
Subscriptions
Billing Agreements

13. One time payments
Pre-Authorized payments
Subscriptions
Billing Agreements

14. One time payments
Pre-Authorized payments
Subscriptions
Billing Agreements

15. Chained payments
Chained split
payments
Split payments

16. Chained payments
Chained split
payments
Split payments

17. Chained payments
Chained split
payments
Split payments

18. Defining our universe

19. Conversion:
/kənˈvəˈʃ(ə)n/
the process of changing or
causing something to change
from one form to another

20. Conversion:
/kənˈvəˈʃ(ə)n/
turning a visitor into a payer

21. Our tools:
User Experience
Speed

22. The rules:
Am I allowed to do this?

23. Paid and Free Applications
• App purchases: Developers charging for applications and downloads from Google Play
must do so by using Google Play's payment system.
• In-app purchases:
• Developers offering virtual goods or currencies within a game downloaded from
Google Play must use Google Play's in-app billing service as the method of
payment.
• Developers offering additional content, services or functionality within another
category of app downloaded from Google Play must use Google Play's in-app billing
service as the method of payment, except:
• where payment is primarily for physical goods or services (e.g. buying movie
tickets, or buying a publication where the price also includes a hard copy
subscription); or
• where payment is for digital content or goods that may be consumed outside
of the application itself (e.g. buying songs that can be played on other music
players).
Developers must not mislead users about the applications they are selling nor about any in-
app services, goods, content or functionality they are selling.

25. • Developers offering virtual goods or currencies within a game
downloaded from Google Play must use Google Play's in-app
billing service as the method of payment.
• Developers offering additional content, services or functionality
within another category of app downloaded from Google Play
must use Google Play's in-app billing service as the method of
payment, except:
• where payment is primarily for physical goods or services (e.g.
buying movie tickets, or buying a publication where the price
also includes a hard copy subscription); or
• where payment is for digital content or goods that may be
consumed outside of the application itself (e.g. buying songs
that can be played on other music players).

28. vs.

30. Physical goods vs.
Digital goods

32. 2 ways to implement
PayPal payments

34. Allow to pay via
PayPal or Card

35. The user enters
his credentials:
• Email
• Password

36. The user needs
to confirm his
payment...

37. /dev/code

39. Accept credit
cards in your
application
manually

40. Image
recognition
technology in
your app!

41. card.io
github.com/card-io/card.io-
Android-SDK

42. Verifying payments
… & reducing risk

43. {
"proof_of_payment": {
"rest_api": {
"state": "approved",
"payment_id": "API-PAYMENT-ID-1843"
}
},
"payment": {
"short_description": "Paris SG Jersey",
"amount": ”59.99",
"currency_code": "USD"
},
"client": {
"platform": "Android",
"paypal_sdk_version": "1.0.2",
"environment": "live",
"product_name": "PayPal Android SDK"
}
}
REST-API proof of payment: Adaptive Payments proof of payment:
{
"proof_of_payment": {
"adaptive_payment": {
"pay_key": "AP-70M68096ML426802W",
"payment_exec_status": "COMPLETED",
"timestamp": "2013-02-20T00:26:25Z",
"app_id": "APP-91B933855X481767M"
}
},
"payment": {
"short_description": "Paris SG Shirt",
"amount": "59.99",
"currency_code": "USD"
},
"client": {
"platform": "Android",
"paypal_sdk_version": "1.0.2",
"environment": "live",
"product_name": "PayPal Android SDK"
}
}

44. Gradle doesn’t
support
bundling .so
files with your
apk yet

45. Wrap up
Many ways to monetize apps
Payments don‘t have to suck
Users care about speed

46. PayPal SDK
github.com/paypal/PayPal-
Android-SDK

47. Questions?
tmesserschmidt@paypal.com
@SeraAndroid
slideshare.com/paypal