It is important for everyone to read carefully this patent, as it protects much more than the 3DShiningFlakes™, HDLenticular™ and Popims HD3D™ technologies which are described in the present web site.
Anyone wishing to fight counterfeiting and fraud must be very carefull not to use or promote any technology that could be considered as counterfeiting any valid patent. For this reason, it is important before choosing any competing technology to check each of the following points.
- Light disruptors may be drown in a transparent block or raised above a substrate
- A "Marker" is any recognizable graphics structure used to determine the three-dimensional position of the authentication device, but the patent never says it should be a printed design. On the contrary, as described col.14 lines 28-32 of US 9,058,535, it may be the recognizable shape of a product: "In order to evaluate the position of said acquisition means 3 with the best possible accuracy, it is recommended to analyze the deformation due to the perspective of the image of the largest possible component of the protected document or goods, e.g. its outline if it is constituted by a label."
- The patent protection is not limited to the size of particles. They can be invisible to the naked eye or much bigger.
- The advantage of very small particles is important because it makes it more difficult for a counterfeiter to replicate a code.
- It is not compulsory that modules return light in different ways depending on the point of views from which they are observed. The main claim of the patent does not limit the method to that. We use shining particles that become visible when reflecting the light of a flash for two reasons
because it enables using much smaller particles, that become visible when reflecting the light of a flash even if they are not resolvable in other lighting conditions by current image processing systems available, such as cell phones or bar code scanning image based devices,
and because there is no existing technique that enables replicating a code with each particle comprising a reflecting plan being simultaneously at the same place with the same inclination and the same orientation.
- Particles do not need to be grouped in sub-entities such as what we call "modules". Claim 10 of US 9,058,535 provides that the grouping together of said particles referred to as "disrupters" in sub-entities referred to as "modules" can be made at the time of the step of establishing a description. Creation of these modules always happens when making an acquisition of a device with a camera such as a smartphone, because such camera creates pixels, that are such sub-entities.
- It is not compulsory to measure brightness of modules in a binary form depending on the brightness of the modules. It is however an advantage to do this because it shortens the size of the device description in the database.
- The main claim of patent does not determine any accuracy in positioning of acquisition means.
- The authentication device may include an optical diffuser but it is not compulsory. The presence of such diffuser makes it possible to limit the accuracy of a hand held devices used for image captures, making it easy for the user to place the smartphone at the right position.
- It is possible that none of the two acquisitions depends on the lighting conditions. The patent describes two possibilities, as the additional acquisition may be done:
either from a viewpoint that is perceptibly different from said original viewpoint;
or under different lighting conditions.
Making two acquisitions either in two different lighting conditions, or two acquisitions from two different viewpoints, is protected by the main claim of the patent.
- The separation surfaces between the modules are not compulsory, and modules can touch each other. It is only in claim 12 of US 9,058,535 that such surfaces are described: "said modules are separated from one another by separation surfaces that do not include any disrupters visible from said acquisition means, and wherein said separation surfaces presenting a combined area that is not less than 5% of the total area of the modules.
The advantage of such separation surfaces is however important, because creating a description may then consist, for each module, in analyzing an area greater than the area of the module under consideration, said area projecting beyond said module over a zone that does not include disrupters. This is protected by claim 13 of US 9,058,535.