I got an email today from the Social Security Administration telling me that they are adding additional authentication to the “My Social Security” website. Starting next month, you have to provide SSA with a cell phone number and when you sign in, you will be texted an authentication code. There is no alternative option other than not using the web service.
So, apparently, the SSA has determined that all citizens in the US are now well enough off to own a cell phone. Of course, if they don’t they can always have their chauffeur drive them to the nearest SSA office.