The blue button — or whatever the chosen icon ends up being — would indicate that the website followed the recommended privacy and security practices, including things such as a reminder not to download or store information on a shared computer and a way to be as sure as possible that a real live person, not an automated program, is requesting the download. “What really resonated with people was the idea that there’d be some common signal” that those practices would be followed, Carol Diamond, managing director at Markle, tells the Health Blog.