Inference Group
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The image below shows the state of the Dasher interface while the user is writing the word `objection'; alternative words that could easily be written at this point include `objective', `objects_', and `object_oriented'.
Dasher text entry interface

If you find Dasher hard to imagine based on these static pictures, please take a look at the movies below. When you watch someone else steering Dasher, you may find it looks difficult, but be assured: it is actually very easy; it's a lot like driving a car.

You can try Dasher right now, in your browser, if your browser is Java-enabled.

When you try Dasher for the first time, please read the tips for novices.

Streaming movies, presentations

By the Dasher team

Dasher - information-efficient text entry (19th April 2007)
Google tech talk (54 minute video) by David MacKay at Google Inc, Mountain View

By other people

Augie, an ALS-sufferer, is featured on this MSNBC article - we see him driving Dasher with his feet.
Google video by Paul Tingey showing Dasher hooked up to RoboRealm (machine vision software)
"Writing sentences with a red plastic ball"

Movies

Simple moviesFile size
Animated gif of Dasher version 3, should work in any browser 300K
Animated gif of Dasher version 3, identical to the above, but higher quality animation 560K
Animated gif of Dasher version 1, should work in any browser 81K
Animated gif of Daishoya (Japanese Dasher version 1).
    Further information in Japanese
300K
Flash movie (will play in your browser if flash-enabled) showing Dasher in Persian by Behdad and the FarsiWeb Project
Movies for Windows systemsFile size
Streaming video demonstration (1.5 mins asf) including audio commentary.
    The text of the commentary is available.
2.7 M
3 minute demonstration of Dasher, with a commentary. The demonstration uses lotus screen cam software (included in the zip file) which runs on windows 95 systems.
This movie is highly recommended as the commentary explains how Dasher is used.
5 M
    The text of the commentary is available. 4 K
mpeg Movies File size
Dasher with an eye-tracker: enhanced eyetracking mode (Aug 2005) 28 M
Dasher with an eye-tracker (November 2001) 6 M
[In this movie, David hits the space bar to start the program going, and after that he uses nothing but eyes; he's using Dasher version 1.6. In Dasher versions 3 and 4, we can start and stop Dasher without cheating in this way.]
Dasher running on a Compaq iPAQ 9 M
Dasher with an eye-tracker: enhanced eyetracking mode, demonstrating autocalibration, within ten seconds or so, of a hugely-miscalibrated eyetracker (September 2004) 17 M
Dasher with an eye-tracker: enhanced eyetracking mode, demonstrating use of control mode (September 2004) 9 M
Breath Dasher, including control mode demonstration (September 2004) 25 M
Keith Vertanen's Speech-Dasher prototype (mpg) (avi) 13 M
Large MOV Movies File size
Large AVI Movies File size
Dasher with an eye-tracker (November 2001) 54 M
AVI of Dasher running on a Compaq iPAQ 4 M
Very large AVI of Dasher running on a Compaq iPAQ 90 M
AVI by Alexandre-Alapetite showing Dasher being used to write rich text into a Wiki 3M
Daniel Jalkut's movie of Dasher on a Mac can be found on this blog 28M

More screenshots with captions can be found here and here. For further demonstrations, movies and screenshots see David Ward's Dasher site; also Keith Vertanen's.

Thanks to Steve Hiner, Geoff Stead, and Simon Cozens for help with animations.


The Dasher project is supported by the Gatsby Foundation
and by the European Commission in the context of
the AEGIS project - open Accessibility Everywhere: Groundwork, Infrastructure, Standards)

Site last modified Wed Feb 16 12:13:30 GMT 2011