I'm going to be testing a way for students at the University of Leicester to print wirelessly to our printers from their own mobile device (could be smartphone, laptop, tablet etc.)
There are two different ways for them to print - they can send their document as an attachment in an email, or go to a website upload the file. I'll be testing both these methods against benchmarks, whilst also comparing them against eachother.
My problem is that our students will also likely want to use different kinds of devices to print (although the feedback we have had is that laptops and macbooks. are likely to be the most important). With time restrictions we can only realistically test around 10 students, and I'm struggling to see how we could test different devices with such a small sample (the type of device will inevitably influence things like time on task, so combining the scores on a task where participants used different devices is clearly a no-go)
The system isn't going to be changed much before release, and so the testing is going to be summative in nature - we want to see if it meets user requirements and establish a benchmark when future improvements are made. The iterative testing approach of going with a few users, then fixing issues and retesting isn't really relevant here.
Should I be concentrating only on one device for this study, or is there a way for me to be testing more than one device even with such a small sample, and still get valid results?