By exploiting synergies between available multi-purpose office machines and electronic document readers (with annotation capabilities), we can provide teachers with a mobile platform for exam reviewing. I will tell my experience on developing and using a system at my school for exams of about ninety students. As a bonus, we obtain automatic collection of grades and the possibility for the students to view their corrected exercises online.

I like to review exercises while commuting but until recently, I found it cumbersome since one has to carry a heap of sheets and manage to write on them in the narrow space of a train seat. Then, I bought an e-ink reader to carry my papers and I began to wonder if I could use the device to review my students exams too.

The procedure I'm currently using is:
1. On a pile of blank sheets I print a header displaying the name of the student, a datamatrix image encoding the same information, and a frame for the student grade.
2. At the examination room, I distribute these sheets to the corresponding students to be filled with the exercise solution.
3. After the exam, I use an office machine (which is provided with a batch sheet feeder) to scan the pile of exercises to a big PDF file that I load into my reader.
4. I review the exercises on the e-ink reader adding comments with the provided stylus and writing the awarded grade into the aforementioned frame.
5. A computer application reads the annotated exercises, identifies the student from the datamatrix code and recognises the handwritten grade from each digital page and finally collects this information in comma-separated file.