Biometric authentication is quickly becoming a fundamental component of the banking industry due to its ability to offer highly secure identity verification processes.
Apart from that, biometrics are also used for applications in mobile banking, online banking, ATMs, and even in-branch banking..
It is information about an individual's external physical characteristics, such as fingerprints.
It also refers to features of the iris as an example, but this is not currently used for immigration purposes..
The use of biometrics as a tool for identification and security purposes began in the late 19th century with the work of Alphonse Bertillon..
New laws governing biometric technologies are urgently needed, an independent legal review led by Matthew Ryder QC has found.
Biometric data includes ,faces, fingerprints, voices, DNA profiles, and other measurements related to the body.
Technologies using this data, such as:
The BBC has asked the US Department of Defense for comment.
The Afghan government has also used biometrics.
Afghanistan's National Statistics and Information Authority has processed more than six million applications for its e-Tazkira biometric identity card, which includes ,fingerprints, iris scans and a photograph.
The BBC has contacted the firm for comment.
But campaigners argue the technology has no place in education. "Biometrics should never be used for children in educational settings - no ifs, no buts.
It's not necessary.
Just ban it," a spokeswoman for Defend Digital Me, a children-focused digital rights group, told the BBC.
Biometric data includes ,faces, fingerprints, voices, DNA profiles, and other measurements related to the body.
Technologies using this data, such as:
