—Text-based password schemes have inherent security and usability problems, leading to the development of graphical password schemes. However, most of these alternate schemes are...
Abstract. Many users routinely log in to their system with system administrator privileges. This is especially true of home users. The advantage of this setup is that these users c...
Dinan Gunawardena, Jacob Scott, Alf Zugenmaier, Au...
: Rock art, human-made markings on stone, is an important cultural and the earliest expression of abstract thinking. While there are tens of millions of photographs of rock art in ...
HIPs, or Human Interactive Proofs, are challenges meant to be easily solved by humans, while remaining too hard to be economically solved by computers. HIPs are increasingly used ...
Kumar Chellapilla, Kevin Larson, Patrice Y. Simard...