Hi appreciated @ojerinde.

The limitation in the implementation of this technology lies in the ethical aspects.

In order to apply this lie detector, the observed person that is being studied should be informed. In fact, you should have prior approval from that person.

But the authorities make use of this technology without our consent. They study our features and gestures. The results are stored in Big Data and their other subsequent uses are unknown to us.

This data can be used to "clone" faces. The legal consequences can be of great magnitude.

Your friend, Juan.