This would be amazing because we give out orientation stickers for all of our construction sites and having a sequential number system helps us track how many people we have had on site and allows us to make sure that they have gone through the orientation for each specific job site.

Yes please! For my business http://air-vote.com it is the absolute requirement. We are based on unique QR coded smileys displayed on each sticker and we have thousands of them being used by various clients.

Where are we with this request? Still under review 9 years later?

Very glad to see this idea already posted and under review!

I envisioned a sort of - submit a design with a region dedicated to unique content, and submit somehow what the unique content would be. (and wouldn't expect this additional service to be without a small bump in cost)

Example:

I'd like 100 of item X, but each has a unique code in a rectangular region. I submit one design, and a list of the unique codes.

Custom content that's not plain text could be more difficult (like the QR code mentioned in a prior comment) but could perhaps be handled by submitting a zip file with the individual unique content items.

OR maybe even QR generation could be part of the service; submit the text items to be added in QR form to the unique region - as in, I could submit my list of unique text content, but also choose one of a selection of formats - Plaintext, QR, Barcode, etc.

YES YES YES

I emailed customer support about this recently, this would mean I could print name badge stickers for events.

This would be a big help with vehicle identification.