When completing the participant’s enrolment form, fieldworkers can use the mobile plugin to scan the respondent’s fingerprints which are electronically stored with the enrolment data. During follow-up interviews the fieldworker can then verify the respondent’s identity in real-time by scanning their fingerprint and comparing it to the reference.
In South Africa, the Mobenzi ID plugin is being used by the Centre for the Programme of AIDS Research in South Africa (CAPRISA) and Epicentre AIDS Risk Management as part of the HIV Incidence Provincial Surveillance System (HIPSS), a four year longitudinal study to monitor HIV incidence trends in the uMgungundlovu District in KwaZulu-Natal. Along with the storage and matching of participant fingerprints, a server-side algorithm automatically monitors new participant fingerprint records and compares them against those already in the system to detect and notify data management if any duplicate enrolments occur.
In Vietnam, Mobenzi ID is being used by the Woolcock Institute of Medical Research as part of the ACT3 project (Active Case-finding in Tuberculosis). Over 60,000 adults are enrolled each year, with their fingerprints if they consent. The participants’ data can then be linked to previous records by using fingerprint identification.
The Mobenzi ID plugin can be installed on compatible Android devices and interfaces with standard, low-cost biometric hardware connected to the device via a USB cable to facilitate the capture and verification of fingerprints. This capability can be integrated into any survey or form, allowing for a respondent to be uniquely identified using their fingerprint.