This question is an important one for anyone who will need to interrogate suspects for information. An interrogation is different than an interview as in an interrogation, only one person asks questions and the other answers while in an interview there is more give and take with each side asking or answering questions. For an interrogation, the most important factor to be considered when creating the physical environment is that it be comfortable but free from any distractions at all. The cell phone, any windows, any other furniture, every distraction must be removed to keep the suspect focused on the current question. The interrogator must be able to observe body language and listen closely to what is said and what is implied when the suspect says anything. Because a complete record of the interrogation will be needed, whatever means used such as a recorder must also be set up ahead of time.