Name
Abstract | ||
|---|---|---|
Mobile devices are increasingly used for text-entry in contexts where visual attention is fragmented and graphical information is inadequate, yet the current solutions to typing on virtual keyboards make it a visually demanding task. This work looks at assistive technologies and interface attributes as tools to ease the task. Two within-subject experiments were performed with 23 and 17 participants, respectively. The first experiment aimed to understand how walking affected text-entry performance and additionally to assess how effective assistive technologies can be in mobile contexts. In the second experiment, adaptive keyboards featuring character prediction and pre-attentive attributes to ease visual demands of text-entry interfaces were developed and evaluated. It has been found that both text-input speed and overall quality are affected in mobile situations. Contrary to the expectations, assistive technologies proved ineffective with visual feedback. The second experiment showed that pre-attentive attributes do not affect users' performance in task-entry tasks, even though a 3.3---4.3 % decrease in error rates was measured. It was found that users reduce walking speed to compensate for challenges placed by mobile text-entry. Caution should be exercised when transferring assistive technologies to mobile contexts, since they need adaptations to address mobile users' needs. Also, while pre-attentive attributes seemingly have no effect on experienced QWERTY typists' performance, they showed promise for both novice users and typists in attention-demanding contexts. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1007/s10209-013-0319-y | Universal Access in the Information Society |
Keywords | Field | DocType |
assistive technology,mobile,pre-attentive,text-entry | Computer science,Reuse,Human–computer interaction,Visual attention,Mobile device,Multimedia,Preferred walking speed,Text entry | Journal |
Volume | Issue | ISSN |
13 | 3 | 1615-5297 |
Citations | PageRank | References |
1 | 0.35 | 25 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Hugo Nicolau | 1 | 381 | 34.33 |
| Tiago João Vieira Guerreiro | 2 | 17 | 5.52 |
| David Lucas | 3 | 1 | 0.35 |
| Joaquim A. Jorge | 4 | 1008 | 81.51 |