Each evening a researcher phoned the participants for a
brief interview. These interviews identified any significant
problems in using the device and also gauged general
usage of the device. At the end of the trial each participant
took part in an exit interview. These interviews focused on;
where they wore the device, what they enjoyed using it for,
where they felt it could be improved and to identify
whether perceptions towards Glass had altered since the
workshop. Each device was then wiped of all content. We
describe the themes from the field-trial in the following.