The buttons have a sutisfying feedack. The button clicks when it is being pushed back and makes a sound if appropriate settings are set. The phone also gives a feedback/sound hen turned off and turned on.
The affordances are successfully employed in the design of this phone. Due to its simplicity and clear labeling it is almost imposible to use t in any other way than the intended. The physical bits (buttons) are obviously there to be pushed.
Mapping of the phone is also good. The buttons are all n cronological order. Also, each option in the main menu has a picture that provides a clue to what that option is for.
The phone also has a semantic constran; the system relyes on the knowledge of language and symbols/numbers.
Due to the simplcity of the phone I am usually in the state of habituation. I am so used to the system that I am only considering the task at hand and not giving any thought to the system.
HATE: Lght switches at my house
Although the lightswitches provide reasonable feedback with the clicking noise, the feedback is not at all clear on whether the light is on or off. If the light is located near the switch, then the light itself will give visual feedback. Some rooms, where the switch is located outside the room, have no visual feedback, unless that area is entered. Furthermore, there are two light switches for the same light (in some locations). Thus, you almost never know which position to place the switch in to get the desired effect. The on and off positions alternate, depending on which switch you use. It is obvious, that the affordances are not successfully used in the design of he switch.
The mapping of the switches is also very confusing. At some locations in the house there are up to 5 switches in a row with absolutly no sematic mapping.
Physical constrains in this case (the fact that you can only click the top o the bottom of the switch) give hints on how to operate the system.
At this point in time, I am nowhere near the habituation state, because I have to play with the switches before getting the result I need.
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