Wearable

Option

Signals in Study I (n = 6)

Signals in Study II (n = 8)

Smart Glasses

1

Subtle onset signal (visual) + Offset signal (visual) + continuous visual signal during danger area

Strong visual signal at beginning and end of danger area + continuous visual signal during danger zone

2

Strong onset signal (visual) + Offset signal (visual) + continuous visual signal during danger area

Strong visual + audio signal at beginning and end of danger area + continuous visual signal during danger area

Headphones

1

Subtle onset signal (audio) + Offset signal (audio)

Subtle audio signal at beginning and end of danger area

2

Strong onset signal (audio) + Offset signal (audio)

Subtle audio signal at beginning and end of danger area + intermittent audio signal during danger area