I think better rules on what quality of confessions police and prosecutors take into consideration would probably be sufficient. Eg. if the suspect says "okay, fine, I did it" after hours of interrogation but cannot describe what the victim looked like, what weapon they used, where they hid it afterwards, etc, that confession should be considered near-worthless. The real issue isn't inducing the false confession, it's assigning it such a high evidentiary value and presenting it to a jury out of context.