[Steven Lyle Jordan]

Originally Posted by HarryT

Thanks Steve - I'd not come across that. That wasn't what I was thinking of. The thing I was thinking of were DVDs printed with a light-sensitive dye which were, I believe, sold from vending machines. Once you'd opened the sealed packet they were in they'd play for something like 48h and then light would degrade the dye and they'd no longer play. It was intended as a replacement for rentals.

That does sound familiar. More landfillable products. Aces idea.