see below for some various methods of collecting consent online gleaned from AoIR list:
second life – online digital notecards.
VOIP – email before scheduled interview, and agreed to contents of letter verbally, which is recorded along with the interview. advises against reading consent form aloud as too time-consuming and difficult for interviewee to follow.
mail survey: cover letter and consent form sent out. if a respondent returned the questionnaire, it represented their consent to participate. also an online version where consent form popped up after respondent logged in, and must click to indicate their consent before able to answer any questions.
IM interviews: send out informed consent form with information sheet, and respondents emailed back to say they had read, understood, and agreed to participate.
Skype: emailed consent form – faxed back or scanned & emailed. read a short statement at beginning of interview instead of entire form.