Does anyone know of a specialized device or, better, software for a PDA (Palm, PPC, Blackberry, or other) that makes it very easy to log activities ? The idea would be to press a button to indicate completion of an activity and then have a menu of next activities the timing for which would commence upon another button being pressed. The activities should be able to be easily input by the user on a a daily or more frequent basis. Reporting could be left to Excel if the data were recorded suitably (CSV would be good enough). It would also help if there were some way of easily incorporating notes, especially for things like interruptions.
Similar, but not identical, would be software for logging events. This would not provide a complete waking hours journal, but rather a repository of discrete events deemed worth recording.
The applications I have in mind are behavior therapy for folks with attention issues or habits they are trying to extinguish or encourage.