Tokens: Telephone
tapping
has
during
the
last
thirty
years
benefited
from
many
"
improvements
"
which
have
aggravated
the
dangers
of
interference
in
private
life
.
The
product
of
the
interception
can
be
stored
on
magnetic
tapes
and
processed
in
postal
or
other
centres
equipped
with
the
most
sophisticated
material
.
The
amateurish
tapping
effected
by
police
officers
or
post
office
employees
now
exists
only
as
a
memory
of
pre
-
war
novels
.
The
encoding
of
programmes
and
tapes
,
their
decoding
,
and
computer
processing
make
it
possible
for
interceptions
to
be
multiplied
a
hundredfold
and
to
be
analysed
in
shorter
and
shorter
time
-
spans
,
if
need
be
by
computer
.
Through
use
of
the
"
mosaic
"
technique
,
a
complete
picture
can
be
assembled
of
the
life
-
style
of
even
the
"
model
"
citizen
.
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