Swedish criminal law implement something that could be considered a partial application of that idea, but instead of outlawing interrogation, any admission of guilt is only to be considered as part of evidence in a case.

Thus when the courts do their work correctly, it's almost impossible to be convicted on your admissions alone, especially for more serious crimes.

There are however instances where this has still happened, indicating that maybe confeso of guilt should not be admissible as evidence at all, though material evidence found through interrogation probably should.