Table 1.

Major issues identified with the Beatsensor during the usability study.

Issue #	Participants	Task	Issue
S1	P1, P5, P6	Wearing Sensor	Better guidance and training is required on how and where to wear the sensor. Wearable systems such as Beatshould ensure that users are well trained and guided through the set up process, as they are not used to the technology being used.
S2	P1, P4	Resetting Sensor	Lack of defined controls to turn the sensor on and off caused confusion when troubleshooting issues. Simplifying a system can have consequences on intuitiveness. Therefore, designers must either make the controls salient to the users or incorporate breadcrumbs on the design, guiding the users through the process.
S3	P1, P3	Removing Sensor	Adhesive electrodes cause discomfort to users on removal. Designers of future wearable devices should keep in mind the balance between function and user perception.