Like I keep saying seeing the blip is not necessary. Looking through the center of the book has it's advantage. You need to pay less attention to the four corners of the book.
If you look over the top or underneath the book you will want to make sure you are seeing the four corners not just the top or bottom portion of the book. Looking through the center is handy when you have large book like textbooks it makes it easier to notice the four corners.
Remember to affirm your purpose. Photofocus
alone will not guarantee successful activation. You need to know your purpose. What do you want from the book. What important information do you need from the author.
Alex
