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Puckinflight

An all things aviation blog

According to IATA standards for bar codes 5.2.6 Digital Signatures (Pg 42), there can be validation mark in the PDF barcodes that prevents tampering

See, http://www.iata.org/whatwedo/stb/Documents/BCBP_Implementation_Guidev4_Jun2009.pdf

However, that doesn’t prevent a person from viewing their Pre-Check status and adapting to it. Again I ask why is this information not encrypted in some way?

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