WITH MOBILE PAYMENTS HOW TO NOT ANNOY PEOPLE
July 2012
TIM MESSERSCHMIDT Developer Evangelist @SeraAndroid
1. How payments do look like 2. How to ease that..
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Content
Slides: http://bit.ly/LMWcgI
Payment scenario
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Sender Receiver
Transaction
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• Get payment details from the user • Shipping address • Receiver • Payment amount (costs) • Payment method
• Do a few calculations • Shipping costs • Taxes for different countries • Currency conversion
• Provide some feedback • Error messages • Success messages
• Payment processing • Send details to Gateway • Wait for response • Handle response • Fulfillment
• Payment verification • Fraud protection • Secure connections
• Responsive design • Max 2-3 seconds • Update the inventory
Payment scenario
Don’t let the user jump off..
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1. Usability 2. Feedback 3. Quick response
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Don’t be shocked We’ve got solutions
Mobile Payments Library • Supports both Android and iOS • Based on our Adaptive Payments API • Supported payment types: – Simple – Parallel – Chained – Pre-approved
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Code
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1. Initialize the library
Code
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2. Create a Payment
3. Let the library handle it..
Examples • MoneyBeam
– Uses NFC to request transactions – https://github.com/SeraphimSerapis/GADC-MoneyBeam
• YardSale – Uses ZXing to scan QR codes – https://github.com/zaffra/YardSale
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Mobile Express Checkout • Magic happens in a WebView – Payment flows uses redirects to enable
payment at PayPal’s site • Uses your backend with Express Checkout – 3 API calls need to be implemented:
• SetExpressCheckout – Set details • GetExpressCheckoutDetails – Review the order • DoExpressCheckoutPayment – Pay
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Advantage • Reuses existing implementations • Most of the logic can be shared between
different platforms • Mobile optimized – Automatic User-Agent check
• Just a few steps
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PayPal Access • Utilize PayPal to login • Uses OAuth 2.0 & OpenID • Enables to speed up the process – No need to setup yet another account
• Easy to implement – Just a few simple callbacks
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New technologies
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Useful links • x.com/mobile – General overview • paypal.com/dts – Developer Tech Support • devportal.x.com – Application control • developer.paypal.com – Sandbox
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