Audio-tactile Location Markers: Accessible Real-world Tagging for the Blind


In this paper we present the concept of Audio-tactile Location Markers (ALMs) as a remedy to the lack of accessibility in current tag-based applications. ALMs are an auxiliary enhancement for existing real-world tags, which propagates their existence and purpose to blind and vision impaired people in the vicinity. Users can activate an audible signal based on a pre-selection of available tags (pull) or choose to be constantly informed about nearby tags (push). We evaluated both methods with blind and vision-impaired people using an NFC-enabled smartphone. Participants experienced no problems locating the ALM based on the audible signal, but required assistance with touching the tag. Pull was favored to push in specific situations.

Talk: The Fourth IASTED International Conference on Human-Computer Interaction 2009, St. Thomas, US Virgin Islands; 11-22-2009 - 11-24-2009; in: “Proceedings of Computers and Advanced Technology in Education 2009”, Acta Press, Vol. 358, Lund, Sweden (2009), ISBN: 978-0-88986-816-8; 551 - 554
Christoph Wimmer
Projektass. Dipl.-Ing.
Thomas Grechenig
Thomas Grechenig
Ao.Univ.Prof. Dipl.-Ing. Dr.techn.
Karin Kappel
Projektass. Dipl.-Ing. Mag.rer.soc.oec. Dr.techn.