Yesterday, I made a few purchases on taobao and elected to take the Alipay via Octopus route for payment.
Wow - I feel like I'm living in the future!
- I had the Octopus app installed on my Android phone, and 'enrolled' (you do it in app and there is a 24 hour waiting period before your Octopus is linked fully to the app)
- At checkout on taobao you select alipay which shows you a QR code
- Scan the QR code (it will ask you to hold your Octopus to the phone) with the taobao app and payment is done
Very good experience ... normally I would use paypal, but TIC (This Is China)
* of course, your phone must support NFC (sorry OnePlus Two owners)