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Mum 30/09/20 Dad 08/08/24
Join Date: Mar 2004
Location: Galactic Sector ZZ9 Plural Z Alpha, A secret Moonbase (shh don't tell anybody)
Age: 57
Services: 2 x TiVo 360s, SH5. Samsung Galaxy Note 10+ 5G, Ton's of Smart Home stuff, & Cuddy Toy
Posts: 17,397
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Re: secret codes in your printouts!
You could by any number of identical laser printers print of the same document to each, and forensics could tell which printed from each printer (CSI; MIAMI DID THIS)
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I'm a Trustee for a local charity
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