"Quick Response" is a hands-on introduction into the realm of QR code applications and demonstrates a way in which two dimensional bar codes can be used to view images. People have to "read" this book by taking photos of each page using a cameraphone. The phone's QR code reader will then decode the abstract image to reveal that each image is an encoded URL for a photograph hosted on Flickr. The series of photos demonstrates the variety of modern commercial, artistic and subversive QR code applications. In addition, the book demonstrates a new way of appropriating other people's photographs.