How NFC Radios Will Help the Visually Impaired
From: Popular Science - 08/2102 - page 20
By: Corinne Iozzio

New uses for near field communication (NFC), a short-range device-to-device
transmission protocol could help break down the frustrating barrier between
the visually impaired and the text around them. 

NFC could enable users to pull information about anything they encounter
directly to their phone. When a user waves an NFC-enabled phone within two
inches of an NFC tag (a sticker containing a radio and a small memory chip
that holds content like text and URLs), the devices “see” one another’s
electromagnetic signatures, connect, and pass data across the 13.56-megahertz
frequency. 

Read the entire article at:
http://www.popsci.com/technology/article/2012-07/how-nfc-radios-will-help-visually-impaired