Seeking expert laser advice...

Hello,
I'm brand new to the forum and my understanding of lasers is elementary but I have a few questions.

I'm wondering if there exists a safe laser that can quickly be flashed on a plastic object that would change its surface slightly and permanently mark it but would be undetectable to the naked eye?

I would want the molecular change to be detected either by a device or through special glasses.

It would need to be an invisible laser so does that leave me with infra-red as my only choice?

Overall, is this possible / feasible?

If you're interested in this project perhaps we can discuss specifics and work together. Compensation would be offered.

Could you Explain the Exact operation? It would help more experienced members if they understood what Exactly your trying to Achieve.

Marking cards in the 21st century...without being detected. For educational purposes only.

Playing cards....:thinking:

Garbage in..... Garbage out....


Jerry

Thanks Jerry, so which type of laser would leave a small mark on playing cards? And do you think it is possible to see this mark / detect this mark from 2 yards away with a device / glasses?

LOL you trying to pull some Gambling scam?

Is the playing cards that are to be marked in someone's
hands... or are you preparing the cards in advance...

Jerry

They will be sitting in a card shuffling machine

No, I wouldn't personally do it. I want to try to build the system though.
The cards would be marked over the course of a session. Presumably, the experimenter would have the inconspicuous laser marking the important cards. Yes, they will certainly go through shuffle machine.

So your going to make devices that will help people to do it? And Your going make a lot of These?

Not sure. Just read an article about the idea on Bluff Magazine. I think it's very interesting. What are your thoughts? Is this practical? Ya'll know lasers...what can be done as far as imprinting and detecting...

This really isn't a LASER question, it's a MARKING question.

The laser, whether blue, green, red, or IR, is just light and heat. So it can do what any other light and heat can do, but it does it focussed on one particular spot. I'm sure you know this.

The real question here is whether there is a material that you can put on a card that reacts to light or heat in a way that is non-visible, but could still be detected in some other way. This isn't a laser question, it's a... well I'm not sure.... material physics (?) question.

Think of a laser as a magnifying glass in mid-day sun. If you could find a playing card surface that the magnifying glass could mark without leaving a visible impact, then you're set. I'm sure such a substance exists.

Thanks for the feedback. I was thinking the laser would be doing the marking, though. The purpose is to just zap the card quickly without looking suspicious. This is the section of the article I'm referring to...it was written awhile back...

"Isotope imaging… what did I say! Is that another high-tech cheating formula coming to brick and mortar poker? Not exactly, but there are high-tech card marking schemes in the works. Can you guess what they entail? Well, if there’s one technology that’s on the cutting edge of just about everything, naturally it would be that same technology to take poker cheating to new heights in the coming years. Of course I’m talking about lasers.

We’ve already heard about laser scanners in cell phones used to predict where roulette balls will land. Several of these scams have proliferated, the most famous of which is the Ritz Roulette Scam in 2004, where another trio of two men and a woman beat a bunch of London casinos out of $3 million. The next step in laser cheating technology is going to revolutionize marking cards at poker tables. Forget all that invisible and disappearing daub that is the avant-garde method of today’s advanced card-markers.

Within a few years we will see, or at least suffer unknowingly, the effects of tiny laser pens that card-markers will use to shoot beams onto the backs of their hole cards, which will result in tiny discolorations that can only be seen with special lenses and from certain angles. As we are already familiar with laser-engraving technology for marking everything from retail bar codes to paper, wood and plastic products, the transformation to covertly marking the backs of playing cards is just over the horizon. And these laser guns will be made to look like the normal assortment of objects players routinely surround themselves and their chips with at poker tables."

LaserNewbie said:

Thanks for the feedback. I was thinking the laser would be doing the marking, though. The purpose is to just zap the card quickly without looking suspicious. This is the section of the article I'm referring to...it was written awhile back...

"Isotope imaging… what did I say! Is that another high-tech cheating formula coming to brick and mortar poker? Not exactly, but there are high-tech card marking schemes in the works. Can you guess what they entail? Well, if there’s one technology that’s on the cutting edge of just about everything, naturally it would be that same technology to take poker cheating to new heights in the coming years. Of course I’m talking about lasers.

We’ve already heard about laser scanners in cell phones used to predict where roulette balls will land. Several of these scams have proliferated, the most famous of which is the Ritz Roulette Scam in 2004, where another trio of two men and a woman beat a bunch of London casinos out of $3 million. The next step in laser cheating technology is going to revolutionize marking cards at poker tables. Forget all that invisible and disappearing daub that is the avant-garde method of today’s advanced card-markers.

Within a few years we will see, or at least suffer unknowingly, the effects of tiny laser pens that card-markers will use to shoot beams onto the backs of their hole cards, which will result in tiny discolorations that can only be seen with special lenses and from certain angles. As we are already familiar with laser-engraving technology for marking everything from retail bar codes to paper, wood and plastic products, the transformation to covertly marking the backs of playing cards is just over the horizon. And these laser guns will be made to look like the normal assortment of objects players routinely surround themselves and their chips with at poker tables."

Click to expand...

Suspicious means you are cheating....
Just because it is written doesn't make it right...

I've heard this before... "how can I burn something in a glass case"
comes to mind. An when questioned it was a school experiment...
and with further questioning it came out that he was trying to do
mischief to his Dad's something or other....

Cheating at cards and getting caught will in the least get you a
handful of broken fingers...

That being said... a Laser strong enough to permanently mark
a shiny playing card in someones hand can also blind the person
holding the card... unless he was wearing Laser Safety Goggles...
I think that would give it away...
BTW... before you ask.... 1Watt of Visible Laser Energy is as
strong and dangerous to the human eye as 1 Watt of Infra Red
Laser Energy....

Find something else to do.... before your loved ones find you in a
ditch...:cryyy:


Jerry

Jerry, I'm trying to have a discussion on the viability of this. I'm not looking for a lesson in ethics, nor am I personally trying to cheat anyone. Cheating in a casino is a felony. I'm not a felon nor do I plan on becoming one. The only cards being marked would be the ones in your hand, you wouldn't be pointing lasers at other people.

That's like viably discussing killing the neighbour's
dog... I won't condone that either or give advise on
how to do it...

Find another legal use for a Laser and I'll be more
than willing to help you on this Forum:beer:...

Jerry