4 ms·
Yes although any thermal printing I've ever done creates a print out that fades over time, so probably a horrible solution for backup codes.
by user3939382 3y ago
Yes although any thermal printing I've ever done creates a print out that fades over time, so probably a horrible solution for backup codes.
- rodlette 3y agoGood point. Thanks!
- jimnotgym 3y agoYou can get small inkjets too...
- diggan 3y agoWould that happen even if you laminate it + stick it in a dark place?
- Chingers 3y agoThe laminating process would probably blacken the entire paper
- szszrk 3y agoIn my experience yes. Old receipt roles fade even stored in a warehouse. I would try that anyway, as an experiment. A cheap thermal printer for kids is around 10-20 USD (got one for such price with 10 rolls of paper, half of which is sticky paper), has bluetooth, usb and battery. Fits in a pocket. Would be fun to stick such qr code inside some not important book left lying around.
- Sabinus 3y agoI would caution about giving children receipt paper. It may contain a lot of BPA (or replacements). https://www.smh.com.au/business/consumer-affairs/controversial-chemical-removed-from-shop-receipts-over-health-concerns-20221225-p5c8pq.html https://www.smh.com.au/business/consumer-affairs/controversi...
- m_eiman 3y agoThere are variants that claim to be long-lived, but they're in a tiny minority. Edit: I seem to be misremembering; direct thermal transfer printers aren't available with long life prints, only thermal transfer printers are. https://www.zebra.com/us/en/resource-library/faq/difference-between-direct-thermal-and-thermal-transfer-printing.html https://www.zebra.com/us/en/resource-library/faq/difference-... Which is also thermal printing, but not the kind used here.