[carloslagoa]

that's interesting, thanks for the insight -- I was aware of thermal's darkening but unaware of it's speed. I'll leave one out in the sun tomorrow, if I can have ~4hrs with it I'll be chuffed

And, of course, as you said, aviate navigate communicate first :)

Thanks!

[pierat]

Yeah I've been "burned" by thermal receipts before. Had a receipt in my wallet. 30 days later, the thermal print completely faded.

Had to dispute with credit card company over that one. Wasn't fun.

[Cthulhu_]

Makes me wonder if "you need a receipt to claim warranty" is intentional like that.

There's a few apps that can organize / OCR receipts for you, if a photo of a receipt is adequate. I don't actually know any and I may be talking out of my ass but err. I'm sure there are!

[TeMPOraL]

Over here in Poland, companies usually require a "proof of purchase", which can be a receipt or an invoice. As a buyer, it's up to you which one you want to receive[0]. There's a special kind of pseudo-invoice called "personal invoice", which is like a VAT invoice except you don't need to be a company or provide a tax ID for it. This is the one you want in any scenario when you expect to hold on to the proof of purchase for longer than it takes to reach the nearest trash can - its killer feature is that it can't possibly fit on a thermal paper receipt[1], so you get it printed out using regular, durable means, on regular office paper (and/or e-mailed as PDF).

--

[0] - On-line you usually get to pick at check-out, off-line you usually have to ask before paying.

[1] - Technically it could, but it would be quite an achievement, and it's sufficiently non-standard that nobody bothers.

[garaetjjte]

>and it's sufficiently non-standard that nobody bothers

Some gas stations do!