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1.#Introduction##
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2.#Case#study:#interactive#technological#support#for#a#person#with#
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<-2,(0+2$'-!&$2#!\0O!$-+*/.,.!+0%/0*!+'-3,(%02$'-C!2#(,,!*'-K,(!$-2,(3$,&%C!+'**06'(02$3,!
0+2$-K!'/2!'H!\0OU%!0+2$3$2$,%!0-.!+'**06'(02$3,!(,H*,+2$'-!'-!30($'/%!I('2'2GI,%!$-!#$%!
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2#,!%2/.$'!$-2'!2#,!0+2/0*!/%,!+'-2,O2!P]0(2%&''.!,2!0*C!Y;;cQ:!f-+,!2#,!%,+'-.!I('2'2GI,!
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,2#-'K(0I#$+0*!0-.!+'**06'(02$3,!$-%$K#2%!$-2'!2#,!/%,(!I(0+2$+,!P]0(2%&''.!,2!0*C!Y;;c[!
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3.#MYDAY#
<-!2#$%!%,+2$'-!&,!.,%+($6,!2#,!H$-0*!.,%$K-:!\p@5p!$%!0!/6$a/$2'/%C!$-2,(0+2$3,!*$K#2!%G%2,4!
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%,2!'H!&$(,*,%%C!4/*2$+'*'/(!*$K#2!6/*6%!PM*&5&-/(91'[!D$K/(,!>:0Q!I*0+,.!$-!+'-3,-2$'-0*!*04I7
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4.#Insights#from#reflecting#on#the#design#case#
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"#02!$%C!*,0(-$-K!2'C!0-.!6,$-K!06*,!2'!%)$*H/**G!/%,!,a/$I4,-2C!0%!I0(2!'H!'-,%U!6,$-K7$-72#,7
&'(*.!$%!0!I(,(,a/$%$2,!H'(!6,$-K!0-!0/2'-'4'/%!I,(%'-:!N,!6,*$,3,!SD!40G!#,*I!2'!.,%$K-!
$-2,(0+2$3,!2,+#-'*'K$,%!2#02!H/-+2$'-!0%!,a/$I4,-2!u!$-!'2#,(!&'(.%C!&#$+#!#,*I!0!I,(%'-!2'!
6,!0/2'-'4'/%C!0-.!2#,(,6GC!2'!6,!4'%2!H/**G!#$4%,*H:!<-!2#,!+'-2,O2!'H!.,%$K-$-K!0%%$%2$3,!
2,+#-'*'K$,%!H'(!I,'I*,!&$2#!%I,+$0*!-,,.%C!%/+#!0%!\0O!$-!'/(!+0%,C!&,!%,,!,4I'&,(4,-2!
0%!I(,+$%,*G!0%!2#,!.,K(,,!2'!&#$+#!'-,!$%!06*,!2'!h,OI(,%%!i'-,%Uj!$.,-2$2G!2#('/K#!2#,!
,a/$I4,-2!i'-,j!/%,i%jl:!F%$-K!2#,!I('./+2!%#'/*.!H,,*!*$),!T%'4,2#$-K!B(%$!&$2#!2#,!2''*UC!
(02#,(!2#0-!0%!T%'4,2#$-K!2#,!2''*!.',%!H'(!4,U!'(!%'4,2#$-K!T2#,!2''*!$-%2(/+2%!4,!2'!.'U:!!
6.#Conclusion#and#future#work#
<-!0!'-,7G,0(!I0(2$+$I02'(G!.,%$K-!I('+,%%!&,!,OI*'(,.!#'&!0-!,46'.$,.!I,(%I,+2$3,!&'/*.!
I*0G!'/2!$-!.,%$K-$-K!0!%G%2,4!H'(!0-.!&$2#!\0OC!0-!$-.,I,-.,-2*G!*$3$-K!I,(%'-!&$2#!5J@:!gG!
(,H*,+2$-K!'-!2#,!.,%$K-!0-.!.,3,*'I$-K!0!K('&$-K!$-%$K#2!$-2'!\0OU%!*$H,&'(*.C!&,!,OI*'(,.!
0-!0*2,(-02$3,!H/-+2$'-0*!('*,!'H!0%%$%2$3,!2,+#-'*'KG!$-!%/II'(2$-K!,46'.$,.!I(0+2$+,%:!N,!
+0**!2#$%!S46'.$,.!D/-+2$'-0*$2G!PSDQC!&#$+#!4,0-%!2'!K/$.,!0!I,(%'-!2'&0(.%!2#,!0+2$'-7
0HH'(.$-K!%2(/+2/(,!'H!0!I,(%'-U%!'&-!,-3$('-4,-2C!2'!%/%20$-!0+2$'-7I,(+,I2$'-!+'/I*$-K%C!
2'!,-06*,!(,H*,+2$'-!$-70-.!'-!0+2$'-C!0-.!2'!%2(,-K2#,-!0!I,(%'-U%!0/2'-'4G!&$2#$-!%'+$0*!
+''(.$-02$'-:!<-!2#,!+'-2,O2!'H!0%%$%2$3,!2,+#-'*'K$,%!&,!%I,+/*02,!2#02!.,%$K-$-K!H'(!SD!+0-!
+(,02,!I('./+2%!2#02!&$**!6,!4'(,!(,0.$*G!0++,I2,.!0-.!0II('I($02,.!$-!,46'.$,.!I(0+2$+,%C!
0-.!2#,(,6G!*,%%!*$),*G!2'!6,!060-.'-,.!PW#$*$I%!0-.!o#0'C!>__ZQ:!1/((,-2*G!&,!0(,!
.,3,*'I$-K!0!('6/%2!&'()$-K!I('2'2GI,!'H!\p@5p!2#02!+0-!H/-+2$'-!H'(!%,3,(0*!&,,)%!
&$2#'/2!2,+#-$+0*!0%%$%20-+,C!2'!0%%,%%!4'(,!.,,I*G!2#,!0+2/0*!&0G%!$-!&#$+#!2#,!%G%2,4!
+'4,%!2'!H/-+2$'-!0%!0-!0%I,+2!'H!\0OU%!,3,(G.0G!*$H,:!D/(2#,(4'(,C!&,!$-2,-.!2'!,OI*'(,!
I'%%$6$*$2$,%!'H!$-+'(I'(02$-K!4'3,4,-2!%,-%$-K!0-.!0+2$'-!4'-$2'($-KC!&$2#!2#,!0$4!'H!
$-3,%2$K02$-K!$-!0!+($2$+0*!&0G!#'&C!H('4!0-!S46'.$,.!D/-+2$'-0*$2G!I,(%I,+2$3,C!2#,%,!
2,+#-'*'K$+0*!2(,-.%!40G!0..!(,0*!30*/,!2'!0!I,(%'-U%!,4I'&,(4,-2:!!
Acknowledgements:!"#0-)%!2'!\0OC!2'!0**!%2/.,-2%!'H!F2(,+#2!F-$3,(%$2G!'H!5II*$,.!
J+$,-+,%!0-.!F-$3,(%$2G!'H!"&,-2,!2#02!+'**06'(02,.!$-!2#$%!I('A,+2C!0-.!2'!0**!2#'%,!
$-3'*3,.!&$2#$-!W#$*0.,*I#$0!10(,!f(K0-$V02$'-:!
6+)&35'()&)5'(@L(;122&2G(*'4%($%%F(
13"
7.#References#
56'&.C!d:!@:C!X!\G-022C!S:!@:!PY;;;Q:!1#0(2$-K!I0%2C!I(,%,-2C!0-.!H/2/(,!(,%,0(+#!$-!/6$a/$2'/%!
+'4I/2$-K:!6Y?(8+42/43)&$2/($2(Y$"-1)'+H91"42(B2)'+43)&$2(W8:Y9BXC!ZP>QC!Y_7^c:!
5K(,C!W:!0-.!]'(%&$**C!<:!P>__`Q:!=$H,&'(*.!0-0*G%$%:![$1+245($J(6+)&J&3&45(B2)'55&G'23'(;'/'4+3*I(\C!>>>7
>9^:!
5($0%CS:C!S.,-C!]:C!D$%+#,(C!d:C!!d'(40-C!5:C!J+#0(HHC!S:!PY;;;Q!"(0-%+,-.$-K!2#,!$-.$3$./0*!#/40-!
4$-.v+(,02$-K!%#0(,.!/-.,(%20-.$-K!2#('/K#!+'**06'(02$3,!.,%$K-:!8+42/P($2(Y$"-1)'+H91"42(
B2)'+43)&$2(Z!P>Q:!c97>>Y!
g,-2*,GC!R:C!]/K#,%C!?:5:C!R0-.0**C!@:C!R'..,-C!":!J0&G,(C!W:C!J#0I$('C!@:!0-.!J'44,(3$**,C!<:!!P>__YQL!
S2#-'K(0I#$+0**G7<-H'(4,.!JG%2,4%!@,%$K-!H'(!5$(!"(0HH$+!1'-2('*:!<-!?:!"/(-,(!0-.!R:!e(0/2!P,.%:QL!
=*4+&2G(M'+/-'3)&E'/I(M+$3P(:J(Y=Y]<^QP!"'('-2'C!10-0.0C!51\L!8,&!p'()C!II:!>YZu!>Y_:!!
g*'46,(KC!?:!0-.!e0(0%2$:C!]:!PY;>YQ:!M$/&)&$2&2G(')*2$G+4-*,(.&)*&2(M4+)&3&-4)$+,(D'/&G2:!='-.'-L!
R'/2*,.K,:!
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1'-2,O275&0(,!1'4I/2$-K:![$1+245($J(91"42HY$"-1)'+(B2)'+43)&$2I(Q_:!9;Z799b:!
g(,(,2'-C!g:!PY;>ZQ:!]06$2/02,.!'6A,+2%L!,3,(G.0G!20-K$6*,%!2#02!H'%2,(!2#,!$-.,I,-.,-2!*$3$-K!'H!0-!
,*.,(*G!&'40-:!B2)'+43)&$2/I(Q_P9Q:!Y;7Y9:!
g(G%'-C!J:C!=0-.(GC!R:!0-.!N0$-&($K#2C!?:5:!P>__`Q:!5!+'4I'-,-2$0*!3$,&!'H!,O,+/2$3,!.G%H/-+2$'-!$-!
0/2$%4L!R,3$,&!'H!(,+,-2!,3$.,-+,:!<-L!?0+'6!5:!g/(0+)!0-.!?04,%!":!S--%C!PS.%Q:!6))'2)&$2I(
%'E'5$-"'2)I(42%(-/,3*$-4)*$5$G,I!8,&!p'()L!d/$*H'(.C!YZY7Y^_:!
1*0-+,GC!N:!?:!P>__`Q!=&)14)'%(3$G2&)&$2(R(:2(*1"42(N2$.5'%G'(42%(3$"-1)'+(+'-+'/'2)4)&$2P!
1046($.K,C!\5L!1046($.K,!F-$3,(%$2G!W(,%%:!!
1*0()C!5:!P>__`Q!`'&2G()*'+'R(M1))&2G(#+4&2I(#$%,(42%(.$+5%()$G')*'+(4G4&2:!1046($.K,C!\5L!\<"!
W(,%%:!!
@,!?0,K#,(C!]:!0-.!@$!W0'*'C!S:!PY;;`Q!W0(2$+$I02'(G!%,-%,740)$-KL!5-!,-0+2$3,!0II('0+#!2'!%'+$0*!
+'K-$2$'-:!M*'2$"'2$5$G,(42%()*'(Y$G2&)&E'(=3&'23'/I!bP9QC!9c^7^;`:!
@A0A0.$-$-K(02C!":C!J:!N,-%3,,-C!?:!D(,-%C!0-.!e:!f3,(6,,),:!PY;;9Q:!"0-K$6*,!I('./+2%L!(,.(,%%$-K!2#,!
60*0-+,!6,2&,,-!0II,0(0-+,!0-.!0+2$'-:!M'+/(7#&K1&)(Y$"-I!cC!JI($-K,(7E,(*0K:!II:!Y_97!Z;_C!
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@'/($%#C!W:C!]*'+'()*'(43)&$2(&/R()*'(J$12%4)&$2/($J('"#$%&'%(&2)'+43)&$2L!\<"!W(,%%:!YZZ!II:!Y;;>:!!!!
@(,GH/%:C!]:=:!P>__;Q:!`'&2GH&2H)*'H.$+5%R(6(3$""'2)4+,($2(9'&%'GG'+a/(`'&2G(42%(8&"'I(D&E&/&$2(BP!
1046($.K,!P\5QL!\<":!
@(,GH/%C!]:=:!PY;;YQ!<-2,**$K,-+,!&$2#'/2!(,I(,%,-202$'-L!\,(*,0/7W'-2Gw%!+($2$a/,!'H!4,-20*!
(,I(,%,-202$'-:!M*'2$"'2$5$G,(42%()*'(Y$G2&)&E'(=3&'23'/C!>C!Zb`7cZ!!
10(4$,-C!J:!W:C!X!D$%+#,(C!d:!PY;;cQ:!@,%$K-C!0.'I2$'-C!0-.!0%%,%%4,-2!'H!0!%'+$'72,+#-$+0*!
,-3$('-4,-2!%/II'(2$-K!$-.,I,-.,-+,!H'(!I,(%'-%!&$2#!+'K-$2$3,!.$%06$*$2$,%:!B2(M+$3P($J()*'(
=BCY9B(Y$2J'+'23'($2(91"42(043)$+/(&2(Y$"-1)&2G(=,/)'"/(PII:!^_`7b;bQ:!51\:!
d$6%'-C!?:?:!P>_`_Q!8*'(!3$5$G&345(6--+$43*()$(b&/145(M'+3'-)&$2C!]'/K#2'-!\$HH*$-C!g'%2'-:!
d$2*$-C!=:8:!P>__^Q:!N#G!'*.,(!I,'I*,!0++,I2!'(!(,A,+2!0%%$%2$3,!2,+#-'*'KG:!C'2'+4)&$2/!>_P>Q:!9>79b:!!
d''.&$-C!1:!PY;;;Q:!5+2$'-!0-.!,46'.$4,-2!&$2#$-!%$2/02,.!#/40-!$-2,(0+2$'-:![$1+245($J(
-+4G"4)&3/C!ZYC!>9c_7>^YY:!!
d''.&$-C!1:!P>__9QC!W('H,%%$'-0*!3$%$'-:!6"'+&342(62)*+$-$5$G&/)C!_bC!b;b7bZZ:!!
6789:;<=(>6?!=(@A(;7>>B>C(9!6D(!E'2F
>9!
]0(2%&''.C!\:C!W('+2,(C!R:C!J*0+)C!R:C!E'xC!5:C!gy%+#,(C!\:C!R'/-+,H$,*.C!\:C!X!R'/+#GC!W:!PY;;cQ:!1'7
(,0*$V02$'-L!"'&0(.!0!I($-+$I*,.!%G-2#,%$%!'H!,2#-'4,2#'.'*'KG!0-.!I0(2$+$I02'(G!.,%$K-:!
=342%&24E&42([$1+245($J(B2J$+"4)&$2(=,/)'"/C!>9PYQC!_7Z;:!
],$.,KK,(C!\:!PY;>ZQ:!c&d2('2(8&d%:!8$A4,K,-L!J/-:!i@/2+#!2(0-%:!\:!N$*.%+#/2!'HL!],$.,KK,(C!\:!
P>_Y`Q:!='&2(12%(c'&):!"y6$-K,-L!\0O!8$,40G,(!E,(*0K:j!
]/2+#$-%C!S:!P>__^XP(Y$G2&)&$2(&2()*'(]&5%:!1046($.K,!P\5QL!\<"!I(,%%:!
]/44,*%C!1:1:\:C!X!E0-!@$A)C!?:!PY;>^Q!J,3,-!W($-+$I*,%!2'!@,%$K-!H'(!S46'.$,.!J,-%,40)$-K:!
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]/44,*%C!1:1:\:!X!=z3GC!W:@:!PY;>ZQ:!\022,(!'H!2(0-%H'(402$'-!L!.,%$K-$-K!0-!0*2,(-02$3,!2'4'(('&!
$-%I$(,.!6G!I#,-'4,-'*'KG:!B2)'+43)&$2/I!Y;PbQC!9Y79_:!
]'**0-C!?:C!]/2+#$-%C!S:!0-.!e$(%#C!@:!PY;;;Q!@$%2($6/2,.!1'K-$2$'-L!"'&0(.!0!-,&!D'/-.02$'-!H'(!
]/40-71'4I/2,(!$-2,(0+2$'-!(,%,0(+#:!6Y?(8+42/43)&$2/($2(Y$"-1)'+H91"42(B2)'+43)&$2C!E'*:!`C!
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.,%$K-:!B2R(DB=(Q__\I(6Y?(Y$2J'+'23'($2(%'/&G2&2G(&2)'+43)&E'(/,/)'"/I(W[12'(Q\eQfI(72&E'+/&),(
M4+NI(M'22/,5E42&4I(7=6I(--P(OU_HOU^QC!8,&!p'()L!51\:!
e$(%#C!@:!PY;>;Q!"#$-)$-K!&$2#!,O2,(-0*!(,I(,%,-202$'-%:!6B(g(=$3&'),C!Y^C!II:!99>79^9:!!
=03,C!?:C!P>_ccQ!Y$G2&)&$2(&2(M+43)&3'P(?&2%I("4)*'"4)&3/(42%(315)1+'(&2('E'+,%4,(5&J':!1046($.K,!
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=/HHC!W:C!?$('2)0C!\:C!p040%#$20C!8:C!e/V'0)0C!]:C!],02#C!1:!0-.!S.,-C!d:C!PY;>ZQ:!S46,..,.!
<-2,(0+2$'-L!"#,!5++'4I*$%#4,-2!'H!5+2$'-%!$-!S3,(G.0G!0-.!E$.,'7\,.$02,.!S-3$('-4,-2%:!51\!
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8',C!5:!PY;;9Q!63)&$2(&2(-'+3'-)&$2P(1046($.K,L!\<"!W(,%%:!
8'(40-C!@:5:!PY;;YQ:!8*'(%'/&G2($J('E'+,%4,()*&2G/P!8,&!p'()L!g0%$+!g'')%!
f3,(6,,),C!1:?:C!N,-%3,,-C!J:!0-.!]/44,*%C!1:1:\:!PY;;bQ:!@,%$K-!R,%,0(+#L!d,-,(02$-K!e-'&*,.K,!
2#('/K#!@'$-KP(B2(=.&//(D'/&G2(>').$+NP(D+4.&2G(>'.(8'++&)$+&'/P(=)4)'($J()*'(6+)(42%(
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R'6,(2%'-C!":!PY;;YQ!"#,!I/6*$+!030$*06$*$2G!'H!0+2$'-%!0-.!0(2,H0+2%:!Y$"-1)'+(=1--$+)'%(Y$$-'+4)&E'(
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B)45&42(Y*4-)'+(B2)'+24)&$245(Y$2J'+'23'($2(Y$"-1)'+H91"42(B2)'+43)&$2I!8,&!p'()L!51\C!Z_799:!
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J30-m%C!@0K:!PY;>ZQ!<-2,(0+2$'-!@,%$K-!H'(!0-.!&$2#!2#,!=$3,.!g'.G!L!J'4,!<4I*$+02$'-%!'H!\,(*,0/7
W'-2GU%!W#,-'4,-'*'KG:!6Y?(8+42/43)&$2/($2(Y$"-1)'+H91"42(B2)'+43)&$2:!3'*:!Y;!P>Q:!
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