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Stamp paper watermarks also show various designs, letters, numbers and pictorial elements. The process of bringing out the stamp watermark is fairly simple. Sometimes a watermark in stamp paper can be seen just by looking at the unprinted back side of a stamp. More often, the collector must use a few basic items to get a good look at the watermark.
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Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...
Logo used by Apple Touch ID module of an iPhone 6s. Touch ID is an electronic fingerprint recognition feature designed and released by Apple Inc. that allows users to unlock devices, make purchases in the various Apple digital media stores (App Store, iTunes Store, and Apple Books Store), and authenticate Apple Pay online or in apps.
Often used by a watermark designer is the evaluation of single properties to show, for example, an improvement. Mostly, end-users are not interested in detailed information. They want to know if a given digital watermarking algorithm may be used for their application scenario, and if so, which parameter sets seems to be the best.
The iPad is an iPadOS-based (previously iOS) line of tablet computers designed and developed by Apple Inc.; it has a wide variety of accessories made by Apple available for it, including a screen cover specifically for the respective models of iPad called Smart Cover, as well as a number of accessories to allow the iPad to connect to other devices, some of which enable non-touchscreen input.
First there were Ron DeSantis’ alleged heeled boots, now there are Donald Trump’s “toe pads.”. Social media has not taken kindly to the discovery of the two black rectangular pads spotted ...
It is possible for a single-color stamp to be inverted relative to watermark, but this is called an "inverted watermark" rather than an "inverted stamp". Depending on the positioning of stamps within their sheet, the invert may be perfectly centered (as with the Inverted Jenny), or offset. Inverted overprint on a 1919 stamp of Siberia