Sources of the included images (accessed Jan. 5, 2012):

Morse code flag signals: International Code of Signals, U.S. edition, National Imagery and Mapping Agency, Pub. 102, 1969 (revised 2003)

Seaman transmitting Morse code: http://en.wikipedia.org/wiki/File:Seaman_send_Morse_code_signals.jpg

Telegraph key: http://www.magnet.fsu.edu/education/tutorials/museum/morsetelegraph.html

Printing press: http://en.wikipedia.org/wiki/File:Printer_in_1568-ce.png

iPad with New York Times: http://www.digitaltrends.com/computing/new-york-times-offering-discounted-digital-subscriptions-as-part-of-todays-paywall-launch/

Mag stripe: http://www.diytrade.com/china/4/products/1241277/Portable_Magnetic_Stripe_Data_Collector.html#normal_img

Smart card: http://www.tootoo.com/s-ps/iso-card-smart-card-contact-ic-card--p-1627164.html

Prox/RFID card: http://www.indexoftheweb.com/Patriot/RFID_Mark_Of_The_Beast.htm

Hand signs: http://student.ucr.edu/~cande009/language.html

Signal flags: http://en.wikipedia.org/wiki/Maritime_signal_flags

Shakespeare: http://biography4u.com/shakespeare.html

Phone: http://www.eurocosm.com/application/products/teleph/american-500-series-telephones-GB.asp

Maxicode sample: http://www.barcode-2d.com/

I generated the main sample QR code myself, using qrencode