This paper examines the intra-and inter-state usage of biometrics as a "new" technology of development and neoliberal security in South Asia. We view developmental use of biometrics as a tool for integrating the vast majority of poor and marginalized people as visible and calculable economic subjects. We examine the ways in which biometrics translates people into data for the purposes of state, security, and economic legibility. In this paper, we explore biometrics at the intersection of geopolitics, biopolitics, and development to highlight the promise and pitfalls of "technological progress" as a new development strategy."Authorities in India are investigating how Hanuman, the monkey god, has been issued a biometric identity card. The card photo features the character from the Hindu epic Ramayana wearing gold and pearl jewellery and a crown. It emerged when a postman attempted to deliver the card, but could not find a Hanuman at the address." -BBC 1 Whether this "ID of the Gods" was a prank or a form of sabotage is perhaps inconsequential, rather we take note that the problem in the system was only realized when the card failed to be delivered. Unique Identification Authority of India (UIDAI) also known as Aadhaar was launched in 2009 and aims to issue an ID card with a 12-digit unique number to all of India's 1.2 billion citizens with biometric details-iris scan, fingerprints and photographs. The Aadhaar/UIDAI program offers an individualized system of existing state welfare and development programs. Proponents of biometrics promise a future that is secure and profitable, enabling the free movement of goods and people, while curtailing corruption and terrorism. The dreams of massive state development projects, the national ID program being merely the latest iteration, are rarely shaken from their slumber in the plans and speculations of their proponents, while the practice and everyday lives of those people who interact with these systems require further attention by geographers. Hanuman's ID reminds us, according to Gupta (2012, 9), of "the sheer contingency underlying the workings of a supposedly highly rationalized, bureaucratic state." Gupta questions how state bureaucracies produce arbitrary outcomes under the guise of provisioning care, development and security.This paper provides an overview of biometrics research in Human and Development Geography, and related social sciences. The increase in intra-and inter-state usage of biometrics data as an emerging development technology requires further inquiry, and this paper outlines the extant literature and calls for more research on biometrics in the global south. By focusing on South Asia, we provide differentiated examples of biometrics usage in order to examine the