  Deafblind people have both hearing and visual impairments, which makes
communication with other people often dependent on expensive technologies e.g.,
Braille displays, or on caregivers acting as interpreters. This paper presents
Morse I/O (MIO), a vibrotactile interface for Android, evaluated through
experiments and interviews with deafblind participants. MIO was shown to enable
consistent text entry and recognition after only a few hours of practice. The
participants were willing to continue using the interface, although there were
perceived difficulties in learning to use it. Overall, MIO is a cost-effective,
portable interface for deafblind people without access to Braille displays or
similar.
