Maybe you're using public key infrastructure for doing, for example, using certificate authentication or biometrics.

Then simply use biometrics to prevent cheating.

I am very much for using biometrics to track terrorists or potential terrorists and for implementing those capabilities as soon as possible.

There are even grocery monopolies throughout the country that use biometrics on cameras in their stores to track customer spending habits.

It is predominately a user group representing government departments and private organisations who are using or looking at using biometrics, but suppliers also form part of the membership.

And the dream of many security experts is using biometrics, technology that can identify people from some unique physical trait.

Key aspects of the new Act include the ability to use biometrics, a new refugee and protection system, a single independent appeals tribunal and a universal visa system.

Especially when using multiple biometrics combined and verifying the read event by measuring say, body temperature and so on, fooling the biometric readers can become quite a problem.

To date the practise of using biometrics in schools is only legally regulated in the USA:

I am convinced that it should only be possible to use biometrics with very great care and discernment.