Apple pay on apple watch is standalone so the cards don't carry over from your iphone. On iphone, you will need to use touch ID to make a purchase but that doesn't happen on the watch. I suppose there should be extra security measures such as granting a transaction only when the iphone is nearby. However that is not the case as I have successfully brought out apple pay through double click even if no iphone is detected. So does that mean if the watch is lost then whoever picks it up could use my apple pay, given that they have got around my passcode? My point is: Apple pay on iphone has double security -- passcode and touch id, but on watch it only counts on passcode, which doesn't seem secure enough for me. Any thoughts? Maybe I've missed something?