Fig. 8From: Designing challenge questions for location‐based authentication systems: a real‐life studyEach plot represents the effect of response features on the authentication success rate for 3 different attack scenarios (only naive, only strong, strong and naive) for different number of questions (e.g., N =1 to 6). Response accuracy along with the designated response features are used to compute mean authentication success rate for different scenariosBack to article page