Abstract

How much surveillance is morally permissible in the pursuit of a socially desirable goal? The proportionality question has received renewed attention during the 2020 Coronavirus pandemic, because governments in many countries have responded to the pandemic by implementing, redirecting or expanding state surveillance, most controversially in the shape of collection and use of cell-phone location data to support a strategy of contact tracing, testing and containment. Behind the proportionality question lies a further question: in what way does a state of emergency affect the proportionality of morally permissible surveillance? On the qualitative difference view, a state of emergency has the effect of suspending or altering at least some of the constraints on morally permissible action that apply under ordinary circumstances. On the quantitative difference view, the only difference between states of emergency and ordinary circumstances is that the stakes are greater in a state of emergency. If the qualitative difference view is true, then there are situations, perhaps such as the current Coronavirus pandemic, during which the proportionality condition employs a much less demanding ratio between social goods achieved and the badness of the surveillance performed. The overall objective of this article is to argue against the qualitative and for the quantitative difference view. I proceed by first setting out in somewhat greater detail how we must understand the qualitative difference view (section two). I then present a series of problematic implications of adopting the qualitative difference view and argue that jointly these give us sufficient reason to reject it (section three). This entails that our account of morally permissible surveillance should be unexceptional, i.e. the quantitative difference view: there is no morally significant difference between proportionality in ordinary circumstances and proportionality in emergencies, simply a spectrum of smaller to greater potential goods and bads of surveillance. In order to flesh out the implications of the quantitative view, I briefly sketch an unexceptional theory of proportional surveillance in exceptional circumstances (section four). The last section (five) summarises and concludes.