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2. One-time pad - Wikipedia

   en.wikipedia.org/wiki/One-time_pad

   One-time pad. A format of one-time pad used by the U.S. National Security Agency, code named DIANA. The table on the right is an aid for converting between plaintext and ciphertext using the characters at left as the key. In cryptography, the one-time pad ( OTP) is an encryption technique that cannot be cracked, but requires the use of a single ...

3. Voter-verified paper audit trail - Wikipedia

   en.wikipedia.org/wiki/Voter-verified_paper_audit...

   Voter verifiable paper audit trail (VVPAT) or verified paper record (VPR) is a method of providing feedback to voters using a ballotless voting system. A VVPAT is intended as an independent verification system for voting machines designed to allow voters to verify that their vote was cast correctly, to detect possible election fraud or malfunction, and to provide a means to audit the stored ...

4. Menstrual pad - Wikipedia

   en.wikipedia.org/wiki/Menstrual_pad

   Menstrual pads Different sized maxipads Different brands on a shelf. A menstrual pad, or simply a pad, (also known as a sanitary pad, sanitary towel, sanitary napkin or feminine napkin) is an absorbent item worn in the underwear when menstruating, bleeding after giving birth, recovering from gynecologic surgery, experiencing a miscarriage or abortion, or in any other situation where it is ...

5. Filter paper - Wikipedia

   en.wikipedia.org/wiki/Filter_paper

   Filter paper is a semi-permeable paper barrier placed perpendicular to a liquid or air flow. It is used to separate fine solid particles from liquids or gases. Filter paper: used for separating solid from liquid. The raw materials are typically different paper pulps. The pulp may be made from softwood, hardwood, fiber crops, or mineral fibers .

6. Cartridge paper - Wikipedia

   en.wikipedia.org/wiki/Cartridge_paper

   Cartridge paper is a type of high-quality heavy paper used for illustration and drawing. The term "cartridge" refers to the history of the paper originally being used for making paper cartridges for early breechloading firearms .

7. Pad printing - Wikipedia

   en.wikipedia.org/wiki/Pad_printing

   Pad printing (also called tampography) is a printing process that can transfer a 2-D image onto a 3-D object (e.g., a ceramic pottery ). This is accomplished using an indirect offset ( gravure) printing process that involves an image being transferred from the cliché via a silicone pad onto a substrate. Pad printing is used for printing on ...