The book insists that to obtain any confession you must remove all distractions such as mobile phones and give the subject your total attention.

No coercion, threats or promises shall be used under any condition to obtain a confession, statement, or admission from any individual.

Investigations often rely on obtaining confessions rather than on gathering evidence.

He wears a wire to set him up, and obtains a confession.

The police relied heavily on obtaining confession evidence, and for poor defendants a lack of effective defence lawyers led to frequent convictions of innocent people.