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Old April 12th, 2013, 01:43 AM   #524 (permalink)
- Crazy peacock person -
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MoodyBlues's Avatar
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IIRC the FBI and other large law enforcement agencies kept large inventories of every typewriter that they could get their hands on, and compared samples to quickly (at least for back then) determine the make and model of a typewriter. Allegedly because no two typewriters were exactly alike, they had experts who could match a typed page to one specific typewriter, and have it stand up in court. That's why you'd see ransom notes and such made with letters cut from newspapers.
I guess I always assumed that was a ploy to avoid having one's handwriting identified.

IIRC it was built into the printer's ROM, and tied to its serial number. I think one of the articles mentioned dates and other data being included though. That would probably come from the driver.

My color printer isn't on the EFF list, and I use the generic Ghostscript drivers instead of the proprietary HP ones. I guess I'm in good shape.
I have an HP all-in-one printer, and I use the HP drivers. I guess I should do some experimenting with US currency to see what happens.

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