why? why do they detect fake ??? because of the iris on the picture you replaced...you need this code...read the input image you just scanned

First, select an input image clicking on "Select image".
% Then you can
%   - add this image to database (click on "Add selected image to database"
%   - perform iris recognition (click on "Iris Recognition" button)
%     Note: If you want to perform iris recognition database has to include 
%     at least one image.
%  If you choose to add image to database, a positive integer (iris ID) is
%  required. This posivive integer is a progressive number which identifies
%  a person (each person corresponds to a class).
% For example:
%  - run the GUI (type "irisrecognition" on Matlab command window)
%  - delete database (click on "Delete Database")
%  - add "iris_mike1.jpg" to database ---> the ID has to be 1 since Mike is the first
%    person you are adding to database....

https://github.com/Matlab-Biometric-recognition/Iris-Biometric-Recognition-With-Genetic-Algorithms