Patent ID: 9131374
Filing Date: 2015-09-08
Classification: H04L,H04W

Abstract:
1. In a mobile apparatus, a method of restricting access to resources stored in a storage device of the mobile apparatus, comprising: generating, by a processor of the mobile apparatus, a set of knowledge-based authentication (KBA) questions based on data stored in the storage device of the mobile apparatus; receiving, by the processor via an input device of the mobile apparatus, a request for a user to be granted access to the resources stored in the storage device of the mobile apparatus; in response to receiving the request, presenting, by the processor via an output device of the mobile apparatus, questions of the set of KBA questions to the user; obtaining, by the processor via the input device, answers from the user to the questions; and performing, by the processor, a KBA operation configured to produce an authentication result from the answers, the user being granted or denied access to the resources based on the authentication result; wherein generating the set of KBA questions includes, for each of the set of KBA questions, store a timestamp corresponding to the time at which that KBA question was generated; wherein presenting the questions of the set of KBA questions to the user includes selecting the questions according to differences between the time at which the request was received and the timestamps corresponding to the times at which the KBA questions of the set of KBA questions were generated; and wherein a fixed number of questions is selected.