I was at starbucks, paid with the starbucks app on my ip6+. I didn't know that one can open the sbux qr code from the watch! I swipe down and saw passbook app with starbucks, just like in my iphone. turned out it shows the qr code. That's pretty nifty. I'm gonna have to try this tomorrow. Do we have apple watch wiki, from basic troubleshooting and usage? it could be pretty handy.