Keep focus. The interviewer is the one that has control over the interview and can keep the interviewee focused and on track to completion. Online and mobile surveys are often completed during time convenient for the respondent, but are often in the midst of other distractions such as texting, reading and answering emails, video streaming, web surfing, social sharing, and more. Face-to-face interviews are in-the-moment, free from technological distractions.