This negative rates thing is fascinating and scary.  Apparently economists have been talking about it for years.  I remember reading about the magnetic stripe on the dollar bills suggestion in the WSJ some time around 2000.  The idea is that over time the dollar bill becomes worth less, and this is tracked by the magnetic stripe.<p>Just found this interesting paper from the IMF:<p><a href="https:&#x2F;&#x2F;goo.gl&#x2F;65CuKF" rel="nofollow">https:&#x2F;&#x2F;goo.gl&#x2F;65CuKF</a>      (scribd)<p>What will happen if they try to do something like this?