How walls do work: Security barriers as devices of interruption and data capture

What do security barriers do beyond blockading or demarcating territory? This article argues for an understanding of security barriers as sociotechnical devices. It argues for a rearticulation of security barriers as more than territorial technologies or the products and producers of sovereign power. It advances the discussion of security barriers beyond what can be thought of as a ‘geopolitics of security’, where the referent object is territory, and asks that we also consider how they work with mobility as productive devices to govern people in a variety of ways. The article empirically analyses the fences of Ceuta and Melilla, the barriers of Israel’s occupation of the Palestinians, and the US counterinsurgency fence in Falluja. Building on these illustrative cases, the article argues that security barriers should be understood as products of particular modes of government and producers of particular populations through their ability to perform interruptions and capture data.