Wireless RFID and camera sensor network system to assist visually impaired people. - Tee Zhi Heng; Li-Minn Ang; Kah Phooi Seng (IADIS AC (1), 2009)

Information Communication Assistive Technologies for Visually Impaired People. - Li-Minn Ang; Kah Phooi Seng; Tee Zhi Heng (Int. J. Ambient Comput. Intell., 2016)