In no other way can jurors possibly know whether it was a real confession of a guilty party, or someone tricked by double-talk, or someone promised he could go home if he only says the right thing, or someone badgered until he gave in, or someone being lied about. The same should be true for children being questioned about major crimes. If we really wanted to be fair, we would extend the same right to interrogations of adult suspects. But, it is questionable whether our system can stand that much fairness at once. Let it be introduced a little at a time.
Police can audiotape and videotape interrogations whenever they want.
Courts give them full authority to decide whether a jury will get the whole story, or a carefully edited tiny slice of the story. This must end. If police departments do not do it on their own, then courts or legislatures should provide that when police take a suspect down to the station for interrogation, a complete video or at least audio record of that interrogation shall be made. Of course, if such a rule were to be made, some police would stop questioning most suspects at the police station to avoid the rule, because the last thing they would want is people seeing how they really handle the people who come into their possession. The same thing happened after the 1962 United States Supreme Court ruling in Mapp v. Ohio.