ed-informatics.org

We all know what cryptography is: cryp·tog·ra·phy, n. 1.    the science or study of the techniques of secret writing, esp. code and cipher systems, methods, and the like. Cf. cryptanalysis (def. 2). 2.    the procedures, processes, methods, etc., of making and using secret writing, as codes or ciphers. 3.    anything written in a secret code, […]

One feature of most tracking systems is data display for an individual patient in the Emergency Department. In most tracking systems, we can double-click on the patient’s name, and then we see a pop-up window, populated with things that the nurses have entered and that are found in the patient’s electronic medical record (EMR) entry: […]

To find something using the Google search engine, or a location using Google Maps, we simply type in a few words and then browse the results. This is so much better than what was available before that it has made Google one of the richest corporations in the history of the world. However, many programs’ […]

If the point of contact between the product and the people becomes a point of friction, then the Industrial Designer has failed. –Henry Dreyfuss, Designing for People, 1955 Mental Models In the first edition of About Face, one of the first design/usability texts (and a great read, much more personal, personable and readable than subsequent, […]

Icons and Pedagogic Vectors We all have trouble remembering a program’s graphical icons. The International Standards Organisation (ISO) has a standard for icons – an icon must be interpreted correctly by 2/3 of  test subjects. In usability and error-prevention terms, a 1/3 error rate is poor, but reality is even worse – an experimental study […]