Follow the Force: Steering the Index Finger towards Targets using EMS
Late-Breaking Works: Novel Interactions
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Kaul, Oliver Beren
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Pfeiffer, Max
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Rohs, Michael
Extended Abstracts of the ACM CHI'16 Conference on Human Factors in
Computing Systems
2016-05-07
v.2
p.2526-2532
© Copyright 2016 ACM
Summary: In mobile contexts guidance towards objects is usually done through the
visual channel. Sometimes this channel is overloaded or not appropriate. A
practicable form of haptic feedback is challenging. Electrical muscle
stimulation (EMS) can generate mobile force feedback but has a number of
drawbacks. For complex movements several muscles need to be actuated in concert
and a feedback loop is necessary to control movements. We present an approach
that only requires the actuation of six muscles with four pairs of electrodes
to guide the index finger to a 2D point and let the user perform mid-air
disambiguation gestures. In our user study participants found invisible, static
target positions on top of a physical box with a mean 2D deviation of 1.44 cm
from the intended target.