@inproceedings{Nicolau09chi,
 author = {Nicolau, Hugo and Jorge, Joaquim and Guerreiro, Tiago},
 title = {Blobby: how to guide a blind person},
 booktitle = {Proceedings of the 27th international conference extended abstracts on Human factors in computing systems},
 series = {CHI EA '09},
 year = {2009},
 isbn = {978-1-60558-247-4},
 location = {Boston, MA, USA},
 pages = {3601--3606},
 numpages = {6},
 url = {http://doi.acm.org/10.1145/1520340.1520541},
 doi = {10.1145/1520340.1520541},
 acmid = {1520541},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {accessibility, blind, evaluation, familiar, instructions, mobile, orientation},
}