I don't know. I wear a gps watch all the time, so am half on board. A sports watch with notifications, music control and access to maps does appeal, but it would need a 20+ hour battery life to be of interest, which my current watch, phone and wireless headphones already do. It's also got to be pretty tough and waterproof preferably. The Moto 360 Sport is a step in the right direction and I'm curious about the S2 with gps and 3g, though expect the battery life of both with gps on to be pants. In terms of other tech, payment and unlocking would mean wallet and keys could be left at home. That appeals, though battery life would become terrifying. I'm still a little on the fence.