[whpalmer4]

I do something very similar to what wbs-uk proposes. One refinement is to have the two top-level contexts not be quite so similar, so that the quick match code won't confuse them. "Computer" and "Internet" are two that wouldn't match. You can then probably type something as short as "c l" or "i i" to fill in the context.

Another approach is that if you have a task that could be done in more than one context equally well, just pick one. If it is an odd-numbered day, take the first choice, otherwise the second. If you've got any substantial volume of tasks, you are likely to finish the day with available tasks, so the fact that a few tasks didn't get done because you filed them under iPad and you only worked on the MacBook today probably isn't an issue. If they have time pressure, you'll notice that in your review and make sure to do them, just like you would a task that required you to go on an errand.