It mentioned that the opt-out requires a specimen signature (from the FAQ as well What do I need to do to opt-out?). How would you be able to ensure that the op

It mentioned that the opt-out requires a specimen signature (from the FAQ as well What do I need to do to opt-out?). How would you be able to ensure that the opt-out process for the customer will be valid / accepted by Chase if there's no actual human signature? From Chase's perspective, wouldn't they be asking for more details especially if their business hinges on retaining people into their business as much as they can? Update: Additional wording