Oslonøkkelen is a free Android app developed by Oslo kommune that provides residents with easy access to several of the city's services. This digital key allows users to open mini-recycling stations outside of serving hours, making it a convenient tool for those who want to recycle their waste at their own leisure.

With Oslonøkkelen, users can also identify themselves on recycling stations through the app. This feature eliminates the need for physical identification and makes the process more efficient. Overall, Oslonøkkelen is a useful tool for those who want to take advantage of the city's services in a more convenient way.