Since Livescribe took down the Echo community site where I had over 500 pencasts stored, I have completely quit using their product. Instead, I now use a much better product, which is a free app on my iPad called Doceri.
Doceri allows you to use colors (any color and any size), highlighters, graphics, and the best part is you can edit your writing!
I had created a work-around using my smartpen to place the test below the pencast to write test keys, but that was cumbersome and is no longer possible.
Here is a video where I took a screenshot to answer a student’s question and then wrote over the document using Doceri on my iPad to create an animation/video to answer their question.
If you don’t want to add sound, then Doceri automatically creates an animation from your writing. However, I strongly recommend adding audio. Once you add audio you can upload the video to YouTube to share with your students. In the near future I will try to find some time to write a How – To post on using Doceri to write test keys.