Philippe Theophanidis has put together some useful notes on Agamben’s theory of destituent power at the Aphelis blog. These are based on a lecture delivered in Greece which shares some common material with the longer piece translated in the current issue of Society and Space. The Society and Space article is part of a theme section, all of which is open access for a month, along with some permanently open access material on this site.
As Philippe suggests:
The Athens lecture… represents a very good complement to this more elaborate essay, especially in regard to the treatment it offers on the topics of security and biometric technologies.
His post is useful in talking about the differences and similarities between the texts, and summarising some of the key arguments.