A book for use with an augmented reality application, configured to provide an early indication to a camera of pages newly revealed to the camera, comprising: a plurality of stiff leaves, each side of which forms a page of the book; and on each of these pages: a respective fiduciary marker positioned substantially in the middle of the page, each fiduciary marker comprising a different respective asymmetric pattern configured to indicate the scale and orientation of the book to the augmented reality application and to indicate the respective page, and a non-alphanumeric pattern (1040A-1040D), positioned closer to an outside edge of the page of the book than the fiduciary marker of that page, the non-alphanumeric pattern on a respective page being unique to the opposing page pair comprising the respective page on which the non-alphanumeric pattern is positioned; wherein each non-alphanumeric pattern occupies a predetermined area containing light and dark tiles, and wherein each opposing page pair of the book has four copies of the same non-alphanumeric pattern (1040A-1040D), each rotated by 90 degrees to another, and having a rotational symmetry about the midpoint of the spine of the book. a plurality of stiff leaves, each side of which forms a page of the book; and on each of these pages: a respective fiduciary marker positioned substantially in the middle of the page, each fiduciary marker comprising a different respective asymmetric pattern configured to indicate the scale and orientation of the book to the augmented reality application and to indicate the respective page, and a non-alphanumeric pattern (1040A-1040D), positioned closer to an outside edge of the page of the book than the fiduciary marker of that page, the non-alphanumeric pattern on a respective page being unique to the opposing page pair comprising the respective page on which the non-alphanumeric pattern is positioned; wherein each non-alphanumeric pattern occupies a predetermined area containing light and dark tiles, and wherein each opposing page pair of the book has four copies of the same non-alphanumeric pattern (1040A-1040D), each rotated by 90 degrees to another, and having a rotational symmetry about the midpoint of the spine of the book. a respective fiduciary marker positioned substantially in the middle of the page, each fiduciary marker comprising a different respective asymmetric pattern configured to indicate the scale and orientation of the book to the augmented reality application and to indicate the respective page, and a non-alphanumeric pattern (1040A-1040D), positioned closer to an outside edge of the page of the book than the fiduciary marker of that page, the non-alphanumeric pattern on a respective page being unique to the opposing page pair comprising the respective page on which the non-alphanumeric pattern is positioned; wherein each non-alphanumeric pattern occupies a predetermined area containing light and dark tiles, and wherein each opposing page pair of the book has four copies of the same non-alphanumeric pattern (1040A-1040D), each rotated by 90 degrees to another, and having a rotational symmetry about the midpoint of the spine of the book. <EOS>