Although the makers developed Bt.tn with private use in mind, it could also have great potential for use in public spaces. A button like this on the streets of New York could enable passers-by to switch on the lights of a football stadium in São Paulo, or switch off commercial messages on the façade of the building in front of them.
As cities are increasingly overloaded with technology, it becomes more relevant to know who is in charge. Much of the Smart City and the Internet of Things leads to autonomous systems in which technology controls technology. The button makes this process tangible, and lets people decide whether or not they want something to happen through the simple gesture of pushing a button. Bt.tn can be pre-ordered for €69.