in this video find out how to easily
make a working faraday bag or faraday
pouch you can use to protect yourself.
put your vehicle key fobs in to prevent
anyone from stealing your vehicle using
relay attacks at home or when you are
out. also put your passport or nfc cards
in to prevent access to your data when
you're out or traveling. since this
method can be used for any size ziploc
style bag, you can also make one for your
smartphones, laptops and more. it's really
up to you. if you try this then make sure
to check out the four tests i perform on
the bags at the end of the video. you
will want to test your bag is working
properly too. Frakking Creations. showing
you the good stuff on diy faraday bags.
you may already be familiar with faraday
bags you can buy online, but one thing
you might not know is that it can stop
working. that's exactly what happened to
mine and to many other people, as can be
seen if you check the reviews of some of
these faraday bags.
even this pouch we bought for protecting
us while traveling has shielding
material falling apart inside, only after
one trip abroad. what shielding material
to use. you might be wondering why i'm
making a faraday bag if it will fail
anyway. the difference is that we are
going to use copper shielding tape. it is
thicker and more durable. plus if any
holes or RF leaks are found you can
easily patch it up with more tape or
just make a new one of any size you like.
remember to check our video description
for links to the items and apps used in
this video so you can make your own.
what bag to use.
i like to use a ziploc style plastic bag
as the base. the zip feature is quite
useful and helps keep the contents in
and splash protected from water. select
any size that suits your needs. i've kept
many different size bags from packaging
used for items i've purchased in the
past and so this is another great way to
reuse plastic instead of throwing it out
after one use.
before applying the shielding, you can
make some adjustments to size the bag
according to your needs. here i tape the
bag smaller like this to shorten it.
applying the shielding. since the copper
tape is sharp, make sure to be careful as
you apply and smooth the tape. it can
cause small cuts on your hands and
fingers.
to shield the bag properly, start by
shielding the edges. since the edges will
wear faster as the bag is used i am
reinforcing it with more layers here.
for the bottom layer it should extend
past both sides of the bag.
then the overhang is folded back to line
it up with the bag.
both side layers should line up with the
top of the bag but should extend past
the bottom a little.
also fold these overhangs back to line
up with the bottom edge of the bag.
next shield around the bag using layers
parallel with the opening.
each layer should wrap around the bag
completely and overlap the other end of
the tape.
continue to fold any overhangs over to
match the size of the bag.
use as many layers as needed to cover
the bag and make sure to overlap each
layer over the previous layer.
the top layer should line up with the
top edge of the bag and should not have
an overhang.
make sure to form the tape onto the bag
smoothly while maintaining the proper
shape of the bag.
also make sure to smooth out the tape
and make sure it is adhering properly to
the bag.
next, make the magnetic shielded opening.
this rf shielded opening will help seal
the opening from rf signals leaking in
or out. to do this we're going to wrap
vertical layers of tape around the
opening lip so that when closed, the two
sides of the lip touch and form an rf
barrier. the inserted magnets will help
ensure both sides are in contact when
the lip is closed. we are going to use
thin rare earth magnets for this.
the magnets are added before taping and
are placed a few centimeters apart.
use the magnets to hold each other in
place to make it easier to tape them in
place.
here i use one piece of tape to tape
vertically from one side of the bag to
the other. you will have to measure and
size the tape correctly. you could
instead use two pieces of tape. one for
each side if it's easier for you.
the important thing is to make sure the tape
is long enough on both sides to wrap
around the lip of the bag just short of
the zipper. this will allow the bag to
still zip closed and open properly while
maintaining the shielding capabilities.
after taping one side remove the
matching magnet on the opposite side
temporarily so that you can open the lip
and wrap the tape around.
then replace the magnets and finish
taping the first vertical layer.
make sure the tape is taped as flat as
possible to ensure proper sealing when
closed.
continue adding vertical layers with
magnets until the whole lip is shielded
completely. if you use a bigger bag, note
that you will need more magnets. space
the magnets close enough so that the
space between is not too big.
a few centimeters between magnets should
work.
use smaller spacing if you find that you
need to.
testing the faraday bag.
always test your bag before you finish.
you will have to test that it blocks the
signals you intend to block with your
faraday bag. i will be performing four
tests on the faraday bags i made. find
links to the apps used for the testing
in the video description below. first
test is to test with the keyless entry
feature of the vehicle.
you can see that when using the key fob
placed in the closed bag we are no
longer able to open the car door. once
the bag is open,
everything works as expected.
second test is to test with the keyless
start or keyless go feature of the
vehicle.
when the bag is closed i cannot start
the car. the key is not detected. once i
open the bag, the key is detected. the
third test is to test with an NFC credit
card. the card can be read easily using
this card reader app, as can be seen here.
once the card is sealed in the bag we no
longer can read the card. the last test
is to test the larger bag for blocking
cell, wi-fi and bluetooth signals.
here i use the faraday bag tester app.
success! we can block all three signals
using our faraday bag.
if your testing fails you may need more
shielding layers or may need to make
sure the opening is shielded better with
more layers, more magnets or both.
protective cover.
since copper tape has sharp edges you
will want to do this last step so that
you protect your hands and your clothes.
you don't want small cuts on your hands
or small holes in your closed pockets
when you use your bag so use some
packing tape to wrap around the bag
parallel to the opening. as before, make
sure to overlap the tape. alternatively,
you can buy some vinyl wrap like this
carbon fiber one to give your bag a cool
finish. there are many styles of vinyl
wraps to choose from so find one that
suits your needs. if you enjoyed our
video please subscribe, like and share it
so it can help others. ~ Frakking Creations ~