They would have to pay to assemble that info but with a magic band your paying them. While wearing it, they know your every move. They know what you like to eat. What size shirt you wear. How long does it take for you to go back to your room during the day. If you like to eat after a ride and how much. They have access to all of your finances as far as the credit cards you load on it. And that is just what they publicly disclose. They, much like facebook, could very well be doing a whole lot more nefarious things than what they publicly disclose. A data mining treasure trove and the people are paying them to take it from them. People get upset when anyone even speaks ill of it. Pretty 1984 if you think about such things. Luckily it will never come to Disneyland.