What anonymous payment options are there (other than many cryptocurrencies)? I do remember the days of sending cash through the post but I don't think that's what the author is suggesting.
That may be exactly what he's suggesting. The VPN provider he works for (IVPN) allows payment by mail by cash.
I'm not buying anymore on theses type of stores (markets and restaurants mostly), but this is keeping growing difficult because every other week more and more business are starting to ask for my 'credentials'.
Simply give (your local area-code)-867-5309 and there's a very good chance that someone's already signed up with that number. If not, I'll complete the signup with that number and whatever bogus name comes to mind. Jacob Blues, 1060 W Addison 60613 works well.
Just like AdNauseam, simply chaff the system until it's futile.
I'm sure there are similar characters in the public consciousness of every country.