IO Vision – an integrated system to support the visually impaired

Security questions are one of the techniques used to recover passwords. The main limitation of security questions is that users find strong answers difficult to remember. This leads users to trade-off security for the convenience of an improved memorability. Previous research found that increased fun and enjoyment can lead to an enhanced memorability, which provides a better learning experience. Hence, we empirically investigate whether a serious game has the potential of improving the memorability of strong answers to security questions. For our serious game, we adopted the popular “4 Pics 1 word” mobile game because of its use of pictures and cues, which psychology research found to be important to help with memorability. Our findings indicate that the proposed serious game could potentially improve the memorability of answers to security questions. This potential improvement in memorability, could eventually help reduce the trade-off between usability and security in fall-back authentication

Blind user perspectives on a navigational autonomy aid

In previous papers, a navigational system was presented (NAAB), which was built upon two technologies: RFID tags and QR-codes. It was tested by sighted people and reached a high level of satisfactory results identifying the current position of the user with an accuracy of less than 2 m in most cases, and guiding users safely to a desired destination. The new positioning technique is based on line-of-sight QR-code detection, and non-line-of-sight signal attenuation of active RFID tags using a wearable reader. The aim of this chapter is to present some user feedback from the perspectives of blind people. A significant outcome of the usability test on blind participants presented herein is that the system has to work in an integrated manner in order to achieve the aspirations of users