First you need to decide what format of code you want to use – 2D Data Matrix and QR Codes are the most common and can be read by the most readers. They can be created by many websites for free use.

Bar codes are making a comeback. Well sort of. They're not your traditional bar code. I had an opportunity to speak with execs at a Long Beach, Calif.-based advertising agency attempting to cozy-up to ...

The codes are designed to hold a relatively large amount of data in a small space — just under three kilobytes of binary data, or more than 4,000 letters and numbers.

Image credit: Mitya Ivanov/Unsplash Two-dimensional (2D) barcodes, more prominently recognized as QR codes, are back in fashion—with much demand for just about 'contactless' everything these days.

When selecting where to place a 2D machine-readable Data Matrix code, engineers need to remember that it’s all about the data-ensuring it is readily accessible and easy to read. The location, for ...