The purpose of identity cards and signatures is to determine the identity information of suspects or witnesses. The purpose of leaving a communication after recording is to get in touch with the suspect or witness at any time.

With the superstition of confession in investigation practice, the evidential effect of confession is exaggerated. Even the understanding of the duality of confession is mostly theoretical. Here, we can list the common forms of confession in practice and discuss its evidence effect.

Individual confessions, which have not been verified or verified incorrectly, of course have no evidential effect, which is determined by legislation and need not be repeated.

As for the evidential effect of true testimony, once the testimony obtained according to law is verified, it can of course be used as the basis for finalizing the case.

However, it should be noted that the verification process of confession is also a process of collecting other evidence and reviewing and judging the collected evidence. There must be enough other evidence to test the truth of the confession. As a kind of evidence that directly proves the facts of a case, according to logical rules, when you can't prove your authenticity, you lose your independent proof of the case. The possibility of fact.