Introduction: Pay-per-Copy Machine Exploit

Picture of Pay-per-Copy Machine Exploit

This proof of concept instructable will go over how to exploit a popular pay-per-copy type machine with a paperclip.

Step 1: Find the Copy Machine and a Paperclip

Picture of Find the Copy Machine and a Paperclip

These machine's LCD will say "Set Key Counter"

I found this system in 2 seperate college campuses, and I usually keep a paperclip in my wallet, very usful little guys. Paperclips are so freaking useful, PROTIP: keep one with you.

Step 2: Locate the Cables for the Coinbox

Picture of Locate the Cables for the Coinbox

Locate the cables leading from the coin box.
The 4 conductor cable (black, red, white, green) is what we are interested in, while the 2 conductor cable is connected to a wallwart supplying power to the coin collection box.

Step 3: TEH H4X!

Picture of TEH H4X!

Now take your paperclip out of your inventory, apply your shape/craft skill to create a narrow "U" shape.
Insert one prong into the connector conduit containing the black colored wire, and then the other end into the red.

Step 4: Verify

Picture of Verify

Now that your paperclip is securly in place shorting the red and black wires out of the coinbox, check the copy machine's screen. It should now have different paper sizes and let you change the # of copies you are allowed to make.

Step 5: Be Respectful

Picture of Be Respectful

Now, this is a proof of concept. Use, dont abuse.

Make some crazy cool art out of xerox copies! (No, I dont have lepersy)


Advar (author)2013-09-26

Nifty :)

Basilnet (author)2009-09-07

most of the time the colors are not coded properly, there is 5V and ground to Enable the copier, BUT there is also 16 to 36 VOLTS for the pulse signal. If you connect the wrong wire you will FRY the machine's main board. I know because I work on these. You are a smart Thief, nevertheless, a thief you are. Perhaps you should get a job to afford the 10 cents and find out how the real world works.

Advar (author)Basilnet2013-09-26

Orrr, this could be partial proof that a redesign is needed...

Blastwavelabs (author)Basilnet2009-09-07


Splortched (author)Blastwavelabs2009-09-23

Silly parents always blaming videogames.

xproplayer (author)Splortched2009-10-12


King825 (author)2009-02-24

Yeah, I can imagine it now: getting into a lot of trouble to save 10 cents. Sounds worth it, doesn't it?

ReCreate (author)King8252009-05-28

Now,If you Need a hundred copies,its 1 dollar,Way worth it ;P

georion (author)ReCreate2012-10-21

100 copies is 10 dollars in my math class !

klingonprins (author)ReCreate2009-06-07

lol ur tarded. 10cX100copies is $1.00? more like $10.00

ReCreate (author)klingonprins2009-06-07

me tarded?

sharky237 (author)2008-12-10

Why bother with the paper clip ??? if you got a xerox machine I will can tell you how to switch off the coin/swipe machine :) have fun guys

hansdg1 (author)sharky2372010-12-14

and can you just tell how...

haso (author)sharky2372010-11-02

yeah, but then you'd have to use a xerox... *shudder*

seriously though be careful, can hurt yourself and the boards in those old machines aren't easy to source anymore! not in AUS anyway

Redgerr (author)2010-07-08

i was wondering does it revert back to the normal thing after you take the paperclip away? really cool, ill use it if i dont see a camera watching me o_O

Brett (author)2006-09-01

How'd you figure this out? Brett

nak (author)Brett2006-09-01

With SCIENCE!! Actually, it was with science, first I tried white green, didnt do anything... so I tried red black, a great sucess!

ReCreate (author)nak2009-06-07

how is that science? Just asking

smessud (author)ReCreate2009-10-24

Caveman science!!
Wait till he plays withh 220V. He will invent fire.
Let's hope this kid has no interest in surgery...

Aeshir (author)2006-10-10

I love the Intenet!

Mr. Smart Kid (author)Aeshir2007-02-24

so do i

Me three

Kayjay (author)THE_GEEK20072007-07-12


Khaos11 (author)Kayjay2007-08-15


Notbob (author)Khaos112008-03-04

hell yes

MadMechanicMike (author)Notbob2008-03-29

hell yes x2

Umm... super hell yes?


Braeburn (author)TheDeadChemist2008-06-13

me too.

Bor (author)Braeburn2008-10-24


arienh4 (author)Bor2008-11-11

I wonder how thin these go.

linkmaster03 (author)arienh42008-11-11

Agreed, go internets.

nak (author)linkmaster032008-11-11

Well, I might as well pitch a comment in the tower, in the name of science!

arienh4 (author)nak2008-11-11

There won't be enough room for the avatar soon.

Kayjay (author)arienh42008-11-13

AHHHH!!!!! its shrinkingggggggg!!!!!!!!!!!!!!!!!!!!!!! lol

the_mad_man (author)Kayjay2008-11-28

almost there... just a couple more...

arienh4 (author)the_mad_man2008-11-29

Let me aid you in this epic quest. Or whatever.

nak (author)arienh42008-11-29

Inverted Mount Olympus!

linkmaster03 (author)nak2008-11-29

Oh dang, go go go!!!


Kayjay (author)TheDeadChemist2008-11-29

so close but yet so far away.... wait no just close

arienh4 (author)Kayjay2008-11-30

Almost there! Almost there!! ALMOST THERE!!!

nachobobs (author)arienh42009-10-24

this one? will it go over the void and into the event horizon? 

rivetgeek (author)arienh42009-10-22

this is as small as they get

Bor (author)arienh42008-11-30


arienh4 (author)Bor2008-11-30

You okay?

linkmaster03 (author)arienh42008-11-30


Jake Morton (author)linkmaster032009-07-23


Jake Morton (author)Jake Morton2009-08-06


Jake Morton (author)Jake Morton2009-07-23


About This Instructable




Bio: Twitter: @mindsforge
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