Validating Windows Store purchases for your app

Alwin VyhmeisterSenior Program Manager3-126

Why validate purchases?

$ ¥

€ £ ₹

What validation is done by Windows?

Validations built in to WindowsApp integrity validation.

App license validation.

Runtime validation.

Licensing improvements in Windows 8.1Better license sync.Consumable in-app purchases.Increased the PC limit.

Repairing non-genuine appsThe app’s tile is marked on the Start menu.

The app won’t launch.

Go to the Store to fix it.

Offline purchase validation.

1.Do purchase.

2.Check license state offline.

Offline purchase validation – inside the app

Store APIs

App

Store Services

1

LicenseCache2

Did they purchase the in-app offer?Is my app running sideloaded?

http://aka.ms/WinRT-LicensingSample

Purchase validation with receipts.

1. Do purchase and get a receipt.

2. Send the receipt to your service.

3. Validate the receipt signature.

Purchase validation with receipts

Store APIs

App

Store services

App’s services

1

2

3

Licensecache

Modify app behavior when non-genuine

Basic proof of purchase validation.Detect replays of old receipts.Do PC activation to limit sharing.

http://aka.ms/WinRT-ReceiptValidation

Give customers what they paid for.Protect your app investment.Protect your service from non-genuine use.

Validate purchases

ResourcesStore API sample app.http://aka.ms/WinRT-LicensingSample Using receipts to verify purchases.http://aka.ms/WinRT-ReceiptValidationUsing the application specific hardware Id.http://aka.ms/WinRT-ASHWID

Evaluate this session

Scan this QR code to evaluate this session and be automatically entered in a drawing to win a prize!

© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.