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LPD has no service fingerprint in this sample and nearly a million port observations

LPD has no service fingerprint in this sample and nearly a million port observations

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3 min read
Magnetic stripe cards for developers: tracks, HiCo vs LoCo, and the data file the printer needs

Magnetic stripe cards for developers: tracks, HiCo vs LoCo, and the data file the printer needs

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3 min read
CR80 card size in pixels, mm and inches: a developer's cheat sheet

CR80 card size in pixels, mm and inches: a developer's cheat sheet

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5 min read
How to add an even white border and cut line to a sticker design

How to add an even white border and cut line to a sticker design

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3 min read
Every Scan From Our Depot Printers Landed in a Folder the Whole Depot Could Open

Every Scan From Our Depot Printers Landed in a Folder the Whole Depot Could Open

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2 min read
Printing a receipt with a logo and Georgian text from a .NET Windows service, without System.Drawing

Printing a receipt with a logo and Georgian text from a .NET Windows service, without System.Drawing

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8 min read
Printing QR Codes That Actually Scan: Size, Contrast, File Type, and Testing

Printing QR Codes That Actually Scan: Size, Contrast, File Type, and Testing

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3 min read
Assessing Real-World Risk From CVE-2026-78249 Without Overstating It

Assessing Real-World Risk From CVE-2026-78249 Without Overstating It

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2 min read
QR Error Correction, Center Logos, and the Difference Between Static and Redirect Codes

QR Error Correction, Center Logos, and the Difference Between Static and Redirect Codes

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4 min read
MFP Web Management Interfaces and CVE-2026-78249: Why Reachability Decides the Risk

MFP Web Management Interfaces and CVE-2026-78249: Why Reachability Decides the Risk

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3 min read
Changing an Image to 300 DPI Without Touching a Single Pixel

Changing an Image to 300 DPI Without Touching a Single Pixel

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3 min read
Send raw ZPL to a Zebra printer with zero drivers (port 9100)

Send raw ZPL to a Zebra printer with zero drivers (port 9100)

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2 min read
Your ZPL label printed wrong. It's almost always one of these 5 things

Your ZPL label printed wrong. It's almost always one of these 5 things

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2 min read
314 IPP and 44897 Raw Print Results: The Office Device Layer on the Open Internet

314 IPP and 44897 Raw Print Results: The Office Device Layer on the Open Internet

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4 min read
Saddle-Stitch PDF Imposition: Why Page Counts Must Be Multiples of 4

Saddle-Stitch PDF Imposition: Why Page Counts Must Be Multiples of 4

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4 min read
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