Useful Interfaces

I am a harsh critic of interfaces, I admit. I like the simple ones. There are very few. Good user interface must be robust, simple, intuitive and inviting.

There is the one called McDonalds — you give them money, they give you food. Then there is the one called FedEx — you give them a package and money, they get the package to the guy you were sending it to.

I like the car key interface — you put the key in, it starts the car, you take the key out, the car stops. Although, when I was in college I rented a car one time that started, but when I took the key out, it kept going. This was interesting, I thought I might have to shoot it like an animal.