An intriguing mix of the bleeding-edge of recent times (seen at my hotel in Paris yesterday): - this rfid key that you swipe on your door to enter your room - the stability of the past: this old and commong keyring which is so heavy that you would not keep the rfid key in your pocket during a whole day: you must put it back at the hotel desk when you get out (delegation in design).
The flat, sober and white plastic key and the old copper keyring.