Current authentication systems suffer from many weaknesses. With all the means of technology developing, it can be very easy for ‘others’ to fabricate or to steal identity or to hack someones password. Users nowadays are provided with major password stereotypes such as textual passwords, biometric scanning, tokens or cards (such as an ATM).
An image retrieval system is a computer system for browsing, searching and retrieving images from a large database of digital images. Most traditional and common methods of image retrieval utilize some method of adding metadata such as captioning, keywords, or descriptions to the images so thatretrieval can be performed over the annotation words.