<s>
An	O
automated	B-Application
sales	I-Application
suppression	I-Application
device	I-Application
or	O
zapper	O
is	O
a	O
software	O
program	O
that	O
falsifies	O
the	O
electronic	O
records	O
of	O
point	O
of	O
sale	O
(	O
POS	O
)	O
systems	O
for	O
the	O
purpose	O
of	O
tax	O
evasion	O
.	O
</s>
<s>
Because	O
POS	O
systems	O
are	O
increasingly	O
designed	O
as	O
general	O
purpose	O
computers	O
(	O
as	O
of	O
2008	O
,	O
85%	O
worldwide	O
were	O
reported	O
to	O
run	O
Microsoft	B-Application
Windows	I-Application
)	O
,	O
arbitrary	O
software	O
can	O
be	O
run	O
on	O
them	O
.	O
</s>
