As our planet urbanizes more rapidly than ever before, an insidious set of boomerang effects, linking security doctrine in cities in the global North with those in the South, are permeating state tactics of control of everyday urban life.

On 4 February 1976, Michel Foucault, the eminent French social theorist, stepped gingerly down to the podium in a packed lecture at the Collège de France in the Latin Quarter on Paris’s South Bank. Delivering the fifth in a series of 11 lectures under the title ‘Il faut défendre la société’ (‘Society must be defended’), for once Foucault focused his attention on the relationships between western societies and those elsewhere in the world. Moving beyond his legendary re-theorisations of how knowledge, power, technology and geographical space were combined to underpin the development of modern social orders within western societies, Foucault made a rare foray into discussions of colonialism.

Rather than merely highlighting the history through which European powers had colonised the world, however, Foucault’s approach was more novel. Instead, he explored how the formation of the colonies had involved a series of political, social, legal and geographical experiments which were then actually often bought back to the West in what Foucault – drawing possibly on Hannah Arendt’s famous work on totalitarianism – called ‘boomerang effects’. ‘It should never be forgotten,’ Foucault said:

As our planet urbanizes more rapidly than ever before, an insidious set of boomerang effects, linking security doctrine in cities in the global North with those in the South, is permeating state tactics of control of everyday urban life.

Provided that, we can treat the things we encounter in urban environments as system resources, rather than a mute collection of disarticulated buildings, vehicles, sewers and sidewalks. One prospect that seems fairly straightforward is letting these resources report on their own status. Information about failures would propagate not merely to other objects on the network but reach you and me as well, in terms we can relate to, via the provisions we've made for issue-tracking.

And because our own human senses are still so much better at spotting emergent situations than their machinic counterparts, and will probably be for quite some time yet to come, there's no reason to leave this all up to automation. The interface would have to be thoughtfully and carefully designed to account for the inevitable bored teenagers, drunks, and randomly questing fingers of four-year-olds, but what I have in mind is something like, "Tap here to report a problem with this bus shelter."

In order for anyt