Just skyped this presentation to OTM-MONET in Greece, about the paper: http://www.mendeley.com/research/assessing-feedback-indirect-shared-interaction/

1. 1
Assessing
Feedback
for
Indirect
Shared
Interac5on
with
Public
Displays
Jorge
C.
S.
Cardoso
–
jorgecardoso@ieee.org
Rui
José
–
rui@dsi.uminho.pt

2. 2
Our
work
• Study
and
develop
an
interacAon
abstracAon
– We
are
starAng
with
the
concept
of
widget
and
adapAng
it
to
the
public
display
seEng
• In
this
paper,
we
focused
on
the
feedback
to
user
input

3. Target
public
display
applicaAon
3
environment
• Environment
for
public
display
applicaAons
– MulAple
displays
– MulAple
applicaAons
scheduled
for
each
display
– MulAple
interacAon
mechanisms
– MulAple
interacAon
points
for
an
applicaAon
• Personal
mobile
devices,
dedicated
input
devices
– Ubiquity
of
interacAon
and
informaAon
• Not
focused
only
on
the
public
display:
• interacAon
can
happen
even
if
the
applicaAon
is
not
currently
being
shown
on
the
public
display
• ApplicaAons
can
have
mulAple
informaAon
outlets:
web,
mobile
device,
etc.

4. 4
MoAvaAon
• InteracAon
is
import
for
the
success
of
public
displays,
but
• It
is
sAll
hard
to
incorporate
interacAvity
into
public
display
applicaAons,
because
• “At
present,
there
are
no
accepted
standards,
paradigms,
or
design
principles
for
remote
interacAon
with
large,
pervasive
displays.”
[1]

5. 5
MoAvaAon
• There
are
no
interacAon
abstracAons
for
public
displays
that
take
into
account:
– the
heterogeneous
input
mechanisms
– the
mulA-­‐user,
shared
and
possibly
remote
interacAon
environment

6. 6
Widgets
• Our
iniAal
set
of
widgets
maintain
the
graphical
affordances
of
the
desktop
widgets
• But
they
can
be
interacted
with
in
a
very
different
way
– They
have
explicit,
human-­‐readable,
ids
that
can
be
used
with
several
input
mechanisms

7. 7
Study
• Widgets
should
provide
system-­‐level
input
feedback
– But
given
the
mulA-­‐user,
shared,
remote
interacAon
seEng,
we
must
develop
a
feedback
mechanism
specific
for
public
displays
• Independent
of
the
input
mechanism
• FuncAoning
as
a
sharing
mechanism
to
enAce
further
interacAon
[2]
• The
purpose
of
this
study
was
to
assess
how
well
users
understood
the
feedback
mechanism

8. 8
Widgets

9. 9
Feedback
Mechanism
• The
feedback
is
shown
directly
on
the
public
display
(inside
or
near
the
graphical
representaAon
of
the
widget)
– It
includes
a
masked
idenAficaAon
of
the
user
that
interacted
– It
also
includes
an
indicaAon
of
whether
the
input
was
accepted
(widgets
may
be
temporarily
disabled
and
not
accept
the
input)
• We
tested
three
variaAons
– Internal:
Uses
the
text
components
of
the
widget
– External:
Uses
a
pop
up
for
every
input
– External-­‐CumulaAve:
Uses
the
same
pop
up
for
the
all
inputs
within
a
small
Ame
period

10. 10
Feedback
Internal
External
External-­‐CumulaAve

11. 11
Procedure
• We
asked
parAcipants
to
interact
with
mockup
applicaAons
and
interpret
the
feedback
• Using
SMS
messages
to
interact
– The
feedback
used
the
phone
number
to
idenAfy
the
user
• Three
groups
of
users
were
subjected
to
the
three
variaAons
• Three
parts
– Single
user
interacAng
with
the
display
– MulAple
users
interacAng
with
the
display
– QuesAonnaire
to
assess
subjecAve
preferences
• We
asked
users
to
interact
and
interpret
the
feedback
– And
measured
the
errors
in
their
answers
• We
also
asked
them
to
compare
the
three
variaAons
and
tell
us
which
one
they
preferred

12. 12
Part
1
and
2:
Error
results
Part 1 − Single−user Part 2 − Multi−user
3.0
8
6
2.0
4
1.0
2
0.0
0
INT EXT INT EXT E−C

13. 13
Part
3
100 INTERNAL
EXTERNAL
80
EXTERNAL_CUMULATIVE
60
%
40
20
0
BEST WORST

14. 14
Conclusions
• The
External-­‐CumulaAve
was
clearly
preferred
and
had
the
best
performance
• This
study
was
a
controlled
experiment
so
we
sAll
need
a
real
seEng
evaluaAon,
but
the
results
seem
to
indicate
that,
generally,
the
feedback
mechanism
is
understandable.

15. 15
References
• [1]
Bellucci,
A.,
Malizia,
A.,
Diaz,
P.,
&
Aedo,
I.
(2010).
Human-­‐Display
InteracAon
Technology:
Emerging
Remote
Interfaces
for
Pervasive
Display
Environments.
IEEE
Pervasive
CompuAng,
9(2),
72-­‐76.
IEEE.
doi:10.1109/MPRV.2010.30
• [2]
Brignull,
H.,
&
Rogers,
Y.
(2003).
EnAcing
People
to
Interact
with
Large
Public
Displays
in
Public
Spaces.
In
M.
Rauterberg,
M.
Menozzi,
&
J.
Wesson
(Eds.),
INTERACT’03
(pp.
17-­‐24).
IOS
Press.
Retrieved
from
hpp://dblp.uni-­‐trier.de/db/
conf/interact/interact2003.html#BrignullR03

16. 16
The
End
• Thank
you.