US Patent 10127376 Graphical password generation

There is disclosed herein techniques for use in authentication. The techniques comprise providing multiple selectable image portions. The techniques also comprise selecting a first image portion of the multiple selectable image portions. The said selecting of the first image portion comprises performing a first operation to associate a first marking with the first image portion in an identifiable manner. The techniques further comprise generating information for use in authentication based on the first image portion and the first marking associated with the first image portion.