The last words that Walter says in swedish is "Jag har ont" which means, "I am in pain".
The glyphs for this episode spell out: FAITH
Walter mis-remembers Astrid's name once again. This time, he calls her "Astril".
Walter's declaration "Where there is a will there is a way" is a quote originated by the Scottish author and reformer Samuel Smiles (December 23, 1812 - April 16, 1904).
The first part of the security code the Loyalist guard gives is 010567, which is also J.H. Wyman's birthday, a writer for this show and of this episode.