Currently Qt does not support password echo mode which is common for mobile platforms.
When entering a password last entered char remains visible for some time and then changed to dot.
This was internally implemented in Qt 4.8 but I couldn't find such feature anymore in Qt 5.3.0
Here is the link for the old feature request where I found this QT_GUI_PASSWORD_ECHO_DELAY flag but it's not anymore available in Qt 5.
Is it possible to get such feature for upcoming Qt releases?