Yahoo used that, except with an image, not a phrase. And then one day yahoo.com didn't show that image anymore. What do I do then, as a user? At this time, I

Yahoo used that, except with an image, not a phrase. And then one day yahoo.com didn't show that image anymore. What do I do then, as a user? At this time, I didn't care much about my yahoo account, so I simply didn't log in anymore; but in general, this solution leaves the user alone. You need to give them a potential remedy when that happens.