Vending Machines.... In adult stores, titty bars, juice bars, bathrooms...
with an enter the amount you want to buy option.....
You put the cash in the machine, card pops out precoded for the dollar amount....
end of the month, retailer gets his cut from the machine tally.....
*************************************
2nd thought (wow, 2 in a row, damn red letter day)
How come anyone has not set up an "adult only" version of online paying like paypal ?
Shouldn't be that hard to do....hmmm.