This will be a boon to the kidnapping industry since, as every movie shows, each new ransom note carries another risk of detection by a sharp-witted loyal postal employee, or crack detective who just happens to be watching the right postbox to catch you in the act. The e-paper, though not foldable, can bend enough to wrap around a rock and toss through the victim's rich relatives' windows, and it offers the added bonus of being remotely changed, in case the Feds are hot on the trail and you need to change the drop arrangements for the ransom.
Will Rogers never met me.