Apple was quick to tout payment support on the Apple Watch, but how does it work, really? How easily could a thief go on a shopping spree with your timepiece? Don't worry about waiting until the launch to find out, as the company's Eddy Cue has spilled the beans on Apple Pay support a little early. He explains that you have to authenticate using either your fingerprint on the iPhone or a password on the Watch to start spending; after that, you can leave your phone in your pocket. That approval only works so long as the Apple Watch is still on your wrist, though, and you can even force the device to ask for a password every time (you know, in case someone hijacks your arm). In short, Apple, isn't taking any chances -- it wants you to trust that your wristwear is at least as secure as anything else you're carrying.