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Langatonta tiedonsiirtoa #2

A cache by SM07 Send Message to Owner Message this owner
Hidden : 7/21/2018
Difficulty:
2.5 out of 5
Terrain:
2 out of 5

Size: Size: regular (regular)

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Geocache Description:



Viivakoodi on informaation esitysmuoto, jossa tietoalkiot koodataan optiseen koneellisesti luettavaan muotoon. Viivakoodeissa jokaista merkkiä vastaa tietynlainen mustien ja valkoisten raitojen tai pisteiden yhdistelmä. Viivakoodin keksivät Norman Joseph Woodland ja Bernard Silver Yhdysvalloissa (patentti v. 1952). Keksinnössä morseaakkosia venytettiin ohuiksi ja paksuiksi viivoiksi.

Perinteinen viivakoodi on lineaarinen: se koostuu yhdessä suunnassa peräkkäin olevista vaihtelevan paksuisista mustista raidoista ja valkeista raitojen väleistä. Lineaarisen viivakoodin rinnalle on kehitetty useita kaksiulotteisia (2D) koodeja, joissa pienelle alueelle saadaan mahtumaan enemmän tietoa. 2D-viivakoodit muistuttavat kuvioltaan shakkilautaa. Viivakoodien muunnelmia on useita. [1].



A barcode (also bar code) is an optical, machine-readable, representation of data; the data usually describes something about the object that carries the barcode. Traditional barcodes systematically represent data by varying the widths and spacings of parallel lines, and may be referred to as linear or one-dimensional. Later, two-dimensional (2D) variants were developed, using rectangles, dots, hexagons and other geometric patterns, called matrix codes or 2D barcodes, although they do not use bars as such. Initially, barcodes were only scanned by special optical scanners called barcode readers. Later application software became available for devices that could read images, such as smartphones with cameras.

Barcode was invented by Norman Joseph Woodland and Bernard Silver and patented in US in 1952. The invention was based on Morse code that was extended to thin and thick bars [2].



Kyseessä on suhteellisen helppo neljän pisteen multimysteeri, jossa tutustut viivakoodiin tarkemmin.
This is a relatively simple four stage multimystery, in which you will get more familiar to bar codes.

[1] Wikipedia: viivakoodi
[2] Wikipedia: barcode

Additional Hints (Decrypt)

- erzrzore nggevohgrf

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)



 

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