With the recent updates to eMargin came the addition of a touchscreen mode. Let me just tell you a little about it.
Normally highlights would be made by dragging the mouse over the words you wish to annotate. However on touchscreen devices this isn’t possible as the drag action is normally used for scrolling. So we created an interface that instead uses a series of clicks (or touches).
First, touch the first word you wish to highlight. Then a little box pops up with options to either:
extend your highlight
or annotate that single word.

If you choose the later, the normal annotation box opens up. If you choose to extend your highlight, then touch the last word you wish highlight and the annotation box will appear.

You can write your comment, add tags, choose a colour and save your annotation just like normal.
If you touch an existing highlight, information about that annotation (such as tags) will be displayed and a third option will be available:
which opens the annotation.

Finally, you can move the annotation pop-ups by touching the title bar, then touching somewhere else on the page to place the annotation there.
We plan to do further experiments with tablets, trialling eMargin in active situations where you need to carry your annotations with you, for example: actors reading their annotated script. We’ll also be thinking about other improvements that can be made to the interface for different scenarios.
(Updated 19/07/2012 with new user interface screenshots)