Concepts
Blind stamp
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Concepts
Blind stamp
Design formed by a depression in material
uncommon · Q884372
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Concepts
Printer tracking dots
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.jpg/330px-Seal_of_N%C3%A1chod_town_from_1570_(big).jpg)
Concepts
Seal (emblem)
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Concepts
S&H Green Stamps
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_(30273241577).jpg/330px-Bristol_F2b_Fighter_%E2%80%98D8096_D%E2%80%99_(G-AEPH)_(30273241577).jpg)
Concepts
Military aircraft insignia
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Concepts
Watermark
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Concepts
Timestamp
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Concepts
Password
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Concepts
Encryption
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Concepts
Digital signature
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Works
Active Directory
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.jpg/330px-New_Finnish_ID_card_(front_side).jpg)
Unclassified
Smart card
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Concepts
Watermark
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