apps include Leafsnap (flora and fauna), Merlin Bird ID (birds), Shazam (music), QR code scanners, Google Maps, and even Compass. For general inquiries, Google Goggles pulls from Google's expansive database and allows users to point their device toward a painting, landmark, barcode, QR code, printed foreign language, and even Sudoku puzzles to receive information about the object (or solutions to the Sudoku puzzle!).
