The problem is not really the methodology or implementation but the perception caused by it. If you can tell a user "we know you read this" then that implies you are tracking what they read which is something I try to avoid.
I plan to work on a solution, but if I do, users will be able to opt-in or opt-out depending on the implementation.
I plan to work on a solution, but if I do, users will be able to opt-in or opt-out depending on the implementation.