<s>
In	O
interaction	B-General_Concept
design	I-General_Concept
,	O
PACT	B-General_Concept
(	O
an	O
acronym	O
for	O
People	O
,	O
Activities	O
,	O
Contexts	O
,	O
Technologies	O
)	O
is	O
a	O
structure	O
used	O
to	O
analyse	O
with	O
whom	O
,	O
what	O
and	O
where	O
a	O
user	O
interact	O
with	O
a	O
user	B-Application
interface	I-Application
.	O
</s>
<s>
To	O
analyze	O
a	O
user	O
experience	O
(	O
UX	O
)	O
design	O
using	O
PACT	B-General_Concept
,	O
a	O
designer	O
must	O
scope	O
out	O
the	O
possible	O
variety	O
of	O
people	O
,	O
activities	O
,	O
contexts	O
,	O
and	O
technologies	O
in	O
a	O
domain	O
through	O
brainstorming	O
or	O
envisionment	O
techniques	O
.	O
</s>
<s>
PACT	B-General_Concept
also	O
focuses	O
on	O
three	O
categories	O
for	O
mapping	O
people	O
differences	O
:	O
physical	O
differences	O
,	O
psychological	O
differences	O
,	O
and	O
social	O
differences	O
.	O
</s>
