1. Because when you buy let's say some ice cream you do not expect and it should not imply that you give a right to the seller to visit your house whenever you

1. Because when you buy let's say some ice cream you do not expect and it should not imply that you give a right to the seller to visit your house whenever you take a bite or whenever he wants. The same reason. If person wish to watch some dumb movie his privacy should not be compromised. 2. Because once you allow such things then soon any seller would feel safe to add any degree of tracking/ breaking privacy to any product... Oh wait,isn't it what is happening these days? 3. If you do not understand the value of privacy for the democracy then perhaps selling kidney when you buy ice cream example would work for you. Even if it is written between the lines it should be illegal, isn't it ?