When visiting the newly opened SF MoMA I bought a membership and received free for the afternoon the mobile audio tours and museum navigation. It is responsive to your location and will pop up audio descriptions of artists or featured works to learn more about a piece. It was really fun to use but the best part was a modern art tour given by Martin Starr and Kumail Nanjiani. I was cracking up through out the whole experience. Any fan of the two actor/comedians from Silicon Valley will thoroughly enjoy their commentary and in turn will learn a lot about modern artists! I strongly recommend it!