Anti-Adhesive Material or Spray

[Robert Sell]

I am working on a project where I want to prevent criminals from sticking credit card skimmers on vending machines.

Anyone know of a material or spray that will prevent people from sticking these devices on the machines?

I need something that prevents the adhesion but doesn't interfere with real transactions. 

Thanks 

[Kevin]

Easier and probably better off just recording video of everyone who approaches the machine.

I hear the raspberry PI people are working on a camera module.

There are several little stand alone, in camera dvrs.  Like the little car dashboard cams.

I would think 50-75$ per machine and you could also put a cheap lcd display echoing the camera that would also help deter general vandalism.

[Aaron Hilton]

That is a tough call... I would think teflon is your best bet, but all it takes is a bit of scratching with keys to give your adhesive something to grab.

Most anti-stick stuff can get rubbed off chemically pretty quick, either with ammonia or alcohol.

Maybe you would like to think in terms of surface validation.   Maybe something like a kinect. (it's an IR illuminator, laster LED, beam splitter, and camera setup)  Then you could do a depth scan and "SEE" if you've got card skimmer (or something else) left behind.

- Aaron

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[Kevin]

If you just want to know the surface hasn't been replaced, mark it with invisible ink.

http://www.blacklightworld.com/NonPorousNFP.htm

[Robert Sell]

Ideally, I would integrate this into the machine and am talking to the manufacturer with suggestions for later models. The most simple is to have a hole near the CC slot with a light sensor. If it is covered with a skimmer then the machine sends an alert and the skimmer is removed.

The camera is something I checked into but it turns out no one cares. This is a low priority crime and no one wants to watch that video let alone try to arrest someone with it.

I was thinking of either a spray or adhesive strip I could tape on.  I know such a thing must exist but have yet to track it down.

Basically looking for low tech interference to these criminal high tech gadgets...

On Mon, Jan 7, 2013 at 5:08 PM, Aaron Hilton <aa...@conquermobile.com> wrote:

[Aaron Hilton]

Then you could take a UV illuminated photo, compare the difference, with nobody the wiser.   Brilliant!

If you need the work-area verified, then you could disable transactions and flag for maintenance using some pretty cool "Machine to Machine" (M2M) technologies or a simple android phone (with camera).  :D  Might have some skills to contribute here.

- Aaron.

[Tom Keddie]

Adhesives generally need smooth surfaces for a decent adhesion. Adding ribs to the area around the card reader would make ashesion more difficult.

eg. http://images.crestock.com/2360000-2369999/2361119-xs.jpg

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[Cary Newfeldt]

Unfortunately, this is pretty easy to build around:
http://www.youtube.com/watch?v=4Fpe5UrLALE

Regards,

Cary.

[Harondel J. Sibble]

Interesting read on skimmers

https://krebsonsecurity.com/2010/01/would-you-have-spotted-the-fraud/

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[Miststlkr]

That is a damned cool build project!!!

[Cary Newfeldt]

Isn't it! I would love to find the time to try something like this. 

[Robert Sell]

Thanks everyone.

Ya you can buy these devices on the Internet (you guys could build from scratch but most couldn't).
It sounds like low level crime but a lot of this is integrated with organized crime and is big business. Not something a young electronics entrepreneur should be excited about as organized crime doesn't take kindly to unauthorized franchising.

So far I like the idea of a bumpy surface. I can't redo the surface with lugged aluminium but I could stick something like that on. Interesting idea.

[Miststlkr]

rivet on some diamond-plate, or self-adhesive diamond-plate-textured vinyl perhaps, just to give it texture, then paint to match the pump colors so it doesn't look like a redneck's rear quarter-panel?

[Richard Sim]

UHMW plastic might be worth a look, as it is really hard to glue anything to it (very slick, even if roughed up).

[Stefan Wiswedel]

Not sure if I am misunderstanding but would it be possible to make the slot cone or dome shaped? Would be tricky to stick something on there without it looking skew without doing something like in the 3D printer video ..

[Derek Anderson]

How about showing an image (or having a picture inside the vending machine) of what the CC slot is supposed to look like? 

[Robert Sell]

Thanks. Interesting idea. While this would be a good suggestion for the manufacturer in their next release, the challenge as an add on is it would restrict the depth of card insert. I can't do much physically on the machine. I figured if I could make it difficult to apply their device this might be a big enough deterent for them to move on.

 

 

On Tue, Jan 8, 2013 at 8:28 AM, Stefan Wiswedel <stefan....@gmail.com> wrote:

[Robert Sell]

Many places do this and I think it is a good standard for all machines. I will check if these have that or not.

Thanks!

[Tom Keddie]

This is what RBC do on their ATMs.  Seems like this would be something to build with a random selection of molds (or shims) so that there was some slight variation amongst the pool so that even if a device was built to fit a particular curve it wouldn't fit all of them.  A little bit like the theory that the toughest missiles to shoot down are the badly made ones because their flight path is wonky enough to make them hard to hit.

[Stephen Young]

What about a capacitive sensor that monitor for anything put on top of the slot?

SDY

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From: Robert Sell <rober...@gmail.com>
To: vhs-g...@lists.hackspace.ca
Sent: Tuesday, January 8, 2013 8:35:51 AM

Subject: Re: Anti-Adhesive Material or Spray

[Robert Sell]

Some "better" machines now have a tiny hole that when blocked for set period, trigger an alarm.

Unfortunatly, the ones I am working with don't have this. :(