Discrete selection

Next alternative is the selection based on preliminary specification of object identity e.g. with some name. This explicit information (usually in non-graphical form) is used for direct object identification [3], without any contact with to-be-selected object. This identification can be realized by following ways:

• list selection - it can be made and included in GUI instrument
• usage of voice recognition
• direct textual input

The advantage of this method is the possibility to select object that cannot be seen.