Amazon's Android tablets and phone are often seen as second class citizens in the mobile world, but its Fire TV set-top box and Fire TV Stick gadget are worthy competitors in their respective spaces. Amazon is about to make both of them even better with a new update aimed at expanding functionality, particularly in those small but crucial areas that can make a big difference to the user experience. First up: Wi-Fi access for hotspots that require browser-based authentication, like dorm rooms, hotels, offices, and the like.