Chinese reading guide is provided in translation mode. The source material below follows this edition.

Security Devices
Feature	Description
Ascending Size Serial Number	A serial number with each digit slightly increasing in height and width. Both horizontal and vertical formats have been used. Czech Republic and Slovakia are among the countries where this may be found.
Bar Code and Numerals	Used mainly by banks for checks. Some countries have used these on banknotes. Scotland has a bar code, and Canada has used it with serial numbers. Sometimes magnetic.
Colored Fibers	Fibers usually red, blue or green, that are added either into the pulp mix to be randomly flowed onto the paper as it is made, or distributed onto the drying paper in particular areas of the page forming bars of colored fibers, quite visible to the naked eye.
Embedded Security Thread	A high strength thread, sometimes magnetic, embedded into the paper at the beginning of the drying stage. Looks to the eye as a solid dark strip within the paper.
Face-Back Optical Registration Design (Transparent Register)	A design technique where half of an image in a framed area is printed on the face, and the other half is printed on the back, in exact register, so when held to a light, the two half images form one full image.
Foil Imprints	Shaped metal foil applied to the printed note, usually with an adhesive. Sometimes the foil is embossed with an image.
Hologram	Shiny application to the note containing an image that changes in design and color depending upon the viewing angle.
Invisible Printing	Designs printed with inks detectable only when viewed under bright sunlight or ultraviolet light. Sometimes used to replace the more expensive watermark on low value notes.
Latent Impressions	Portions of the note containing sculptured engraving, making some legends or designs visible only when held to the light at certain angles.
Kinegram	Similar to a foil imprint, the design and color changes at different viewing angles.
Metallic Ink	An ink with very fine granules of metal, thus giving the ink a metallic sheen.
Micro Printing	Very small letters added to an intaglio printing plate, sometimes as single lines, or in multiple repeating lines forming a larger block in the underprint design. Intaglio printing keeps the design sharp and clear, but if the note is counterfeit the microprinted area usually becomes muddy and unclear.
Optical Variable Device (OVD)	A foil that displays a three-dimensional image when viewed under proper lighting conditions. Similar to foil imprints.
Optically Variable Ink	An ink when printed in a special pattern changes shades when viewed and then tilted slightly.
Planchettes	Tiny multicolored discs of paper embedded into the pulp mix or randomly sprinkled throughout the paper as it is drying.
Raised Marks	A type of braille design in notes, enabling blind people to identify note values.
Segmented Security Thread	A continuous security thread, usually wide and with lettering, that is added into the paper during the drying process. Once added, a special tool is used to scrape the wet paper off only above the thread, and usually in a particular pattern, thus exposing alternate areas of the embedded thread.
UV-Ultraviolet (Fluorescent)	When viewed in a darkened area, and exposed to a special low or high frequency UV light, a design, value, or paper fibers will glow.
Watermark	Extensively used as a security measure, the watermark is created by a raised design on a drying cylinder applied towards the end of the paper manufacturing process. The raised design causes a thin area in the paper which when held to the light reveals an image. This image can be words, design, or a portrait. Recent developments have made graduations available. Thus, rather than a light/dark watermark, a gradual light to dark face can be achieved.

中文导读（编辑摘要，非逐字译文）：
本节依据原书整理19项防伪特征，提供英文说明和中文译文。它用于阅读目录术语与认识票面特征，不代表某张纸币已通过真伪鉴定。原页的纸币图版不嵌入。

防伪特征
防伪特征	说明
递增字号流水号	流水号各数字的高度和宽度逐步增大，有横向和纵向排列。原书举捷克共和国和斯洛伐克为例。
条形码与数字	主要用于银行支票，也见于部分国家的纸币。原书举苏格兰的条形码和加拿大与流水号结合的使用方式为例；某些具有磁性。
彩色纤维	通常为红、蓝或绿纤维，可加入纸浆随机分布，或在纸张干燥过程中分布于特定区域，形成肉眼可见的彩色纤维条带。
全埋式安全线	高强度线材，有时具有磁性，在造纸干燥初期嵌入纸内；肉眼看起来像纸张内部连续的深色细带。
正背面对印（透光套印）	正、背面各印一部分图案，并准确套准；透光观察时，两部分组成完整图案。
箔印	将特定形状的金属箔通常以黏合方式附于纸币表面，部分箔面带有压印图案。
全息图	附于纸币上的闪亮图像，其图案和颜色随观察角度变化。
隐形印刷	采用特殊油墨印刷的图案，需在强烈日光或紫外线下才能辨识；原书指出有时用于低面额纸币，替代成本较高的水印。
潜影	利用雕刻凹印的局部结构，使某些文字或图案仅在特定光线和观察角度下显现。
光学动态防伪图（Kinegram）	类似箔印，图案和颜色随观察角度改变。
金属油墨	含有极细金属颗粒的油墨，使印刷部分呈现金属光泽。
微缩印刷	在凹印版上加入极小文字，可为单行或重复多行，并组成底纹中的较大区域。原书指出凹印可保持字形清晰，而仿印时微缩文字区域常变得模糊。
光变防伪装置（OVD）	在适当光照条件下呈现立体图像的箔类装置，与箔印类似。
光变油墨	以特定图案印刷的油墨，在轻微倾斜观察时呈现色调变化。
彩色纸片	微小的彩色圆纸片，可混入纸浆，或在纸张干燥过程中随机撒入。
凸起识别标记	类似盲文的凸起标记，帮助视障人士辨识面额。
开窗式安全线	连续的安全线，通常较宽并带文字，嵌入纸内后使其局部按特定间隔显露于表面，形成交替出现的开窗区域。
紫外荧光特征	在较暗环境中以特定紫外光照射时，图案、面额或纸内纤维会发出荧光。
水印	广泛使用的防伪特征。通过造纸时改变局部纸层厚度，使纸张透光时显出文字、图案或肖像；多层次水印还能形成由明到暗的渐变。

Security Devices