User talk:Franckgg

Writing about the work of Franck Guigan
Hello Franckgg. If you are affiliated with some of the people, places or things you have written about in the article Barcode, you may have a conflict of interest or close connection to the subject.

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For information on how to contribute to Wikipedia when you have a conflict of interest, please see our frequently asked questions for organizations. Thank you.--McGeddon (talk) 14:54, 13 September 2011 (UTC)

Nomination of PopimsCode for deletion
A discussion is taking place as to whether the article PopimsCode is suitable for inclusion in Wikipedia according to Wikipedia's policies and guidelines or whether it should be deleted.

The article will be discussed at Articles for deletion/PopimsCode until a consensus is reached, and anyone is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on good quality evidence, and our policies and guidelines.

Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion template from the top of the article. &mdash; 70.21.12.213 (talk) 01:51, 17 September 2011 (UTC)

September 2011
Please do not add promotional material to Wikipedia. While objective prose about beliefs, products or services is acceptable, Wikipedia is not intended to be a vehicle for soapboxing, advertising or promotion. Thank you. JamesBWatson (talk) 19:52, 18 September 2011 (UTC)

Holography (2023)
I have reverted your addition to Holography as it is unreferenced, and also I struggle to understand what it's supposed to mean beyond implying that for some reason a smartphone app is needed for hologram authentication. Are you involved with any product for this purpose? You may wish to review conflict of interest, e.g. the sections on COI and on Paid editing. — Preceding unsigned comment added by Louis Knee (talk • contribs) 13:51, 11 February 2023 (UTC)


 * Hello Louis,
 * I am quite involved in the field of hologram authentication, and that is precisely the reason why I explain how it works, because many people have asked me.
 * This sentence "The authentication of a hologram requires a photographic acquisition to measure the luminosity of several of its parts and the comparison of this acquisition with another previously made from the same point of view. This acquisition must be supplemented by an additional acquisition either from another point of view, or under different lighting to verify that this results in a modification of the appearance of the hologram." just explains the method that is used by almost all customs officers in the world, when they put your passport in a box to check its authenticity: the passport is viewed by one or more cameras under different light sources. It has nothing to do with my personal activity. It's just common knowledge.
 * The second paragraph that I added concerns a little more my personal activities, but is also common knowledge: more and more, you are asked to prove your identity by sending a photo of your passport or your identity card, and use your smartphone to shoot such an image. In Europe, the EIDAS regulation makes it compulsory to use a video and not a fixed image, in order to verify that changes in the position of the hologram towards the camera induce changes in the appearance of the hologram. In order to be able to compare what is seen from a point of view with the relevant reference, it is necessary to determine the position in which the smartphone is located in relation to the hologram.
 * Most companies involved in holography are proposing methods where this point of view is deducted from the distortion due to perspective of the hologram or of other parts of the document. De La Rue (DLS Validate), Kurz Kinegram (OVD Kinegram), and many others are usign this method. I did not explain anything personal but only the general methods used by all companies involved in this activity : "This can be done with a smartphone, without additional equipment, using optical means to determine the position in which the smartphone is in relation to the hologram."
 * My personal activity is more specific than what is explained above : we are developing many specific methods enabling hologram authentication, especially in order to cancel the effect of ambient light, or to enable authentication from a point of view for which no prior reference description exists. I did not add anything related to these technologies on Wikipedia because it would effectively involve a conflict of interest. This is not the case with what I have added. Franckgg (talk) 10:14, 15 February 2023 (UTC)
 * I am very keen on the notion that those with direct expertise should contribute to Wikipedia as it can only help to improve the quality of articles, but unfortunately this site has constant problems with poor or misleading content whether added through ignorance, mischief (vandalism) or darker motives; hence Wikipedia has policies requiring both the verifiability of content and the declaration of Conflicts of Interest and Paid activity.
 * 1) My personal activity is more specific than what is explained above : we are developing many specific methods enabling hologram authentication... If you are affiliated with a company developing such methods then IMO you have a conflict of interest that must be declared: the mandatory deployment of such techniques - as you are implying - will be a direct financial benefit to you.
 * 2) In Europe, the EIDAS regulation... and there is no mention of this in any newspaper? Or trade magazine (e.g. Photonics Spectra) that you can cite? (You may also find such articles in English provide useful examples for writing accessible explanations for a general audience. It's a hard task). Louis Knee (talk) 21:58, 19 February 2023 (UTC)