Word Lens is an incredibly useful and elegant new app for the iPhone. Using augmented reality and optical character recognition, the software instantly translates any sign from Spanish to English (or vice versa).
Simply download the app, pay $5 for a language pack, point it at a sign and watch as it replaces each word with its English equivalent. Check out the video to see for yourself!
Although the app only works with English-Spanish translation, the creators plan to add more languages soon.