Verification Grid and Map Slipping Based Graphical Password against Shoulder-Surfing Attacks

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">PPGP</td><td class="align_center">CCPGP</td><td class="align_center">VGMSGP</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Storage load</td><td class="align_center">One picture</td><td class="align_center">A large number of pictures</td><td class="align_center">No</td></tr><tr><td class="align_left">One password storage occupied</td><td class="align_center">About 100 KB</td><td class="align_center">About 1 MB</td><td class="align_center">About 40B</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The storage occupied comparison among different systems.</div>

Security and Communication Networks

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Table 3

Table 3: Verification Grid and Map Slipping Based Graphical Password against Shoulder-Surfing Attacks 