Talk:Counterfeit banknote detection pen

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Neutrality

I believe this whole article is about a user's belief on whether or not they are effective. Wiki is not for personal opinions, and this article violates that. Jmlk17 20:10, 17 March 2006 (UTC)[reply]

Reviewing the article and adding in a few further edits, I believe it is now NPOV. I do, incidentally, wonder if the article might be better off describing counterfeit pens in general and then mentioning the brand names for the dollar version and euro version, rather than saying they are for dollars, but there is also a euro version. If there are no objections, I will remove the NPOV tag and also reorganize the article slightly. Balancer 21:47, 9 May 2006 (UTC)[reply]

Upgrade

Upgraded to C and removed orphan designation. What other articles could link to this one?Kbk (talk) 15:37, 5 December 2008 (UTC)[reply]

We should mention that these pens are a con.

Not only are these pens a con, but because idiots buy they overpriced highlighters, use them, and believe them, these pens lead to economic losses from people taking all of the counterfeit money these pens do not detect. Frankly, my blind friend Kitty can do far better than these useless pens just by checking for Intaglio Printing . — Preceding unsigned comment added by 76.103.108.158 (talk) 06:19, 1 February 2012 (UTC)[reply]

Additional References

Pen detected bill as fake, SN was flagged as counterfeit, Secret Service determined bill to be real: http://articles.latimes.com/2003/jan/26/business/fi-perfin26 68.32.115.118 (talk) 19:14, 28 August 2016 (UTC)[reply]

Lemon juice and vitamin C

The final paragraph in this article mentioned the acidity of lemon juice on a napkin producing a "false positive" when tested with an iodine pen. This was wrong in three ways: not only is there no discussion anywhere on the Internet about the use of lemon juice (specifically) to treat a napkin (the examples that exist are for vitamin C in solution), the result would have been a false negative, not a false positive, and such a treatment would never be applied to a napkin, it would be applied to a counterfeit bill. AND there is nothing about the acidity of the lemon juice that would have done this: it is the effect of 'vitamin c that prevents the reaction of the iodine pen to the starch that produces the false negative when that treatment is used on a counterfeit note. So make that four ways this was wrong. I have now fixed it, but man, what a mess that was. A loose necktie (talk) 02:29, 27 February 2019 (UTC)[reply]