PaySafeCard - an online payment provider that allows you to spend cash online, as anonymously as cash itself. It's possible to go into a shop, buy a voucher for cash, and spend it online without providing any sort of ID or using anything that is tied to ID.
Or at least it would be, if I could find somewhere that actually sold the vouchers. The PaySafeCard website lists lots of outlets where you are supposed to be able to buy the vouchers, but every single one that I have visited has never heard of PaySafeCard. It seems to be one of the things that you are supposed to be able to do at the PayPoint machine, but in practice it isn't possible. Anyone know anything about this?