I have a web application that monitors a service (polls) every 30 seconds or so, and displays any new records (notifications). Each one of these must be acknowledged by an operator. The customer has ...
Reading The design of everyday things I got to the section Using sound for visibility where Norman, the author, explains some of the advantages and disadvantages of using sound: Sometimes things ...
Many electronic devices, mostly cell phones, by default beep on keypress. What's the point in that? Once a key is pressed their state is changed and that's reflected in the graphic interface anyway. ...