A mobile wallet.
NFC allows the iWatch to be a contactless payment system, this is not groundbreaking, but add in the Touch ID as a security level, and the device becomes something that could allow you to pay for items of significant value. Contactless payment is huge in Europe and waiting to explode in the USA. NFC on the iWatch would be the industry trigger needed to get widespread adoption of this payment mechanism.
All payment information would sycn to your iPhone allowing you to keep track of money and expediture like a true digital wallet.
Travel Tickets/ Security Passes/Coupons
Again aided by Touch ID, the iWatch becomes your ticket to sporting events, airplanes, public transport and your office building. It could be a way to receive and redeem mobile coupons for money off. A true connected home could allow your watch to open your house and car doors, set presets in your vehicle and turn on heating and lighting to chosen settings.
Activity/ Health Tracker.
Your iWatch will monitor your sleep levels, your heart rate, your location, your steps, and a vast number of data points that can come together to record your activity and wellness. Your iWatch will beam information to fitbit style dashboards and could be used to inform doctors of your health, or simply have a dashboard to show sleep patterns and wellness.
Such powerful data can feed any number of apps. Knowing what app developers can do with limited information with the iPhone like a compass, knowing your heart rate, sleeping patterns, your location, your diary, look for apps to become richer than ever. You may have apps to send you to sleep, to play music that reflects your mood, to send you special offers to your iWatch to redeem coupons at certain locations. It could turn off your iPhones wifi when you are moving around. The list of whats is possible is endless.
Better mobile advertising
And with this unbelievably rich data source, ads to mobile devices could soon become super targeted. You may receive location based offers based on apps you have, your location, your diary, the temperature, your search history and more.
GPS and Personal Assistance
The iWatch will be your default screen for most simple needs. Need turn by turn directions or the next train time, just glance at your watch. The iWatch would have predictive technology much like Google Glass. It shows you things it thinks you may want to know, it won’t alert you, but walking past a store it may show you things you may want from inside, but only a nudge. It may show you the person you seem to be near to’s name if you are connected. It will be a continual ambient layer of information should you need it.
And yes, rather dull but your iWatch will become your primary place to see whats happening and not your phone.A typical smartphone is turned on 130 times a day, your wrist will become ” first line support” for your digital life. You won’t be writing on it, but quick glances will be the new elevator waiting behavior as you glance updates, your diary, any messages and heck, even the time!
Answer phone calls: Okay, this may seem weird actually you can simply use this method. Your watch will buzz and either You will be away from my phone (within reasonable distance with bluetooth) . Then you can quickly take the call and then switch it over to phone once when retrieve it. It is kind of weird because the call is on speaker, but it serves its purpose.