In attempting to construct and verify the ease of use (and minimization of user error) of a software based user interface it is of value to have a way to track and analyze use of an interface by user representatives, beta testers, and even as part of post market failure investigation. A few years ago we ran into a tool called Ergolight which focuses on this for windows based interfaced and just recently announced support for web based applications.
If you are designing a medical product with a windows or web based interface this product might be of interest to you. See the link provided.
SoftwareCPR has no interest or relationship with the Ergo-light company and has not used the product nor makes no claims regarding its capabilities or reliability..