____________________
Martin
J
.
Pearsons
,
____________________
inventor
from
UK
,
has
come
up
with
____________________
unique
way
to
prevent
____________________
people
from
locking
themselves
out
of
their
houses
.
The
invention
,
called
____________________
LockSafe
,
uses
____________________
small
electronic
sensor
on
____________________
door
lock
to
check
that
____________________
key
is
outside
____________________
door
before
it
locks
.
____________________
sensor
detects
____________________
infrared
light
beam
from
____________________
key
or
key
chain
.
By
using
this
invention
,
you
will
never
get
locked
out
of
your
home
again
.
All
____________________
people
should
have
one
of
them
.
