“…The securitisation of migration not only conceives of people on the move as a source of 'risk' for European labour markets, national or cultural identities, crime in society, welfare resources, state sovereignty, or national security which must be contained, managed, or kept at a distance, but entails the proliferation and deployment of a vast array of technologies; policies; risk assessments; and specialised agencies, industries, and roles to mitigate these presumed threats. These include the collection and retention of biometric data (Scheel, 2013(Scheel, , 2019Sparke, 2006); detention and deportation; border externalisation (Casas-Cortes, Cobarrubias, and Pickles, 2015;Zaiotti and Martin, 2016); surveillance technologies on land and at sea to detect illicit border crossing (Csernatoni, 2018); detection equipment like x-ray scanners, CO 2 measuring devices, and heart-beat sensors; and the construction of more traditional border fortifications like walls and fences. Calais, unto which the UK's border has been 'exported' (Vaughan-Williams, 2009, is a prioritised space for securitisation, and often a proving ground for novel security strategies and technologies, a number of which have been detailed by Bescherer (2017).…”