A 2018 study of the use of biometric technology for voter identification and verification in Ghana in 2012 called the effort a failure. It's not enough, the researchers argue, for biometrics to be technically sound; for the technology to function as intended registration centres must have real-time connectivity to an electronic national register, electoral officials need to be trained intensively both to operate the machines and to handle outliers and breakdowns. The biometrics themselves are…