When using an e-reader, people in the vicinity have no idea about your taste in reading (since they lack a book’s descriptive dustjacket or paperback).
In some circumstances it’s not to the reader’s advantage -in that people may want to strike up a conversation about the text in question.
Today’s invention is therefore a small, flip-down mirror with reflects the on-screen title (after inverting it). This can be slotted onto one’s device as an invitation to talk about the book in question or a subtle statement about your taste in literature.
If you are surrounded by people you want to chat to, simply keep the device in the up position (thus it acts as a potential dating introduction device, just as books used to).