HIDING AN IMAGE INSIDE AN IMAGE USING MATLAB IEEE PAPER

              To hide a data inside an image is one hectic job, but we can hide an image inside an image using MATLAB...wireless communications sensitive information is frequently exchanged, requiring remote authentication. Remote authentication involves the submission of encrypted information, along with visual and audio cues (facial images/videos, human voice etc.). Nevertheless, Trojan horse and other attacks can cause serious problems, especially in cases of remote examinations (in remote studying) or interviewing (for personnel hiring). 

The bio metric image is personal data, we wants to hide this data with an image and send to the receiver. This is security and effective way to avoid  attacks.. you can find more information and 2015 IEEE paper in this link
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 Remote Authentication via Biometrics: A Robust Video-Object Steganographic Mechanism Over Wireless Networks