You're at the Westin Grand in Berlin having a luxurious vacation. After finishing a delicious bowl of mushroom consommé -- chanterelles are in season, after all -- you stroll up the lavish center staircase toward your room. Having left wallets in the past, you simply hover your Apple Watch over the door. "Click!" And that's that. Magnetic plastic cards are so uncivilized.
This is the future Apple imagines for you with its new Watch, and it's working with Starwood Hotels (the group that owns Westin, among others) to make that future a reality. And that's just one of several scenarios for Apple Watch that were introduced by Apple VP Kevin Lynch during a third-party app demo on stage in Cupertino, California.