Taking this a step further, a biometric cryptosystem combines biometric data (like thumbprints, facial recognition etc.) with PKI (Public-key infrastructure).

1. What Are Biometric Cryptosystems
In the current digital world, data is very important. The internet of
things implies seamless interconnectedness which my result in the
breach of data or information.
The most important safety measure to prevent this is the restriction of
access to valuable data. Only the people who have the authority can
view, manage or share the information. Authentication processes like
biometrics play a vital role in this according to Bahaa Abdul Hadi.
Taking this a step further, a biometric cryptosystem combines
biometric data (like thumbprints, facial recognition etc.) with PKI
(Public-key infrastructure). It keeps authentication simple using
biometrics but removes the risk associated with the sharing of
personal sensitive data.
The Need For Biometric Cryptosystem
For biometric recognition and authentication, the security system
usually stores the data somewhere to match the biometric inputs. For
example, when you undergo a facial scan the system records your
biometrics. Then to authenticate, the system must match your face to
the data it already has. This means, the system already has that
information stored.
In case of a breach, the data on your face or other biometrics can leak
and fall into the wrong hands. Your sensitive information can be
misused. Take the 2015 data breach in the US Office of Personnel
Management. It led to the loss of millions of PII (Personally
Identifiable Information) and biometric templates.
Biometric cryptosystems prevent this by using a decentralized model.
They protect your sensitive data by not sharing your biometrics with
the security system in the first place. Instead, biometric
cryptosystems ensure that your data remains safe with you.

2. No company server will store or enroll your information. In case of a
breach, your private information will not leak out.
How Does Biometric Cryptosystem Work?
Instead of undergoing a biometric scan directly, users authenticate
their biometrics on their mobile devices. The mobile device contains
their biometric template.
After successfully matching their identity with this template, the
mobile device communicates with the security system using tokens.
The system does not receive your biometric data directly.
Another advantage of using biometrics cryptosystems is the freedom
from remembering passwords. Once your mobile device matches
your identity with your biometric template, it allows the system to
grant you access. There is no need to enter an additional password or
share more information.
Biometric cryptosystems are important to maintain privacy and
security of personal data. They will also make the authentication
process faster and more convenient.
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