In honor of the tenth anniversary of Facebook

Viewed in the Chrome browser, a Facebook post from
January 29, 2014, displays an artist's Mystery Box*…

IMAGE- Josefine Lyche, Facebook post with the blank-box symbol for an unidentified character

In the Internet Explorer browser, the mystery is solved:

Further details —


 

Related material — Lyche + Geometry in this journal.

See also the cat and triangle pictured by David Justice yesterday—

 .

* A phrase of filmmaker J.J. Abrams. Click the link 
   for further details. See also a mystery box 
   in The New York Times  on June 2, 2011.