Icosahedron
SOC-14 1K
Except, what is the TL required to read the card? That's the TL at which forgery takes place. If it requires a TL15 ATM to get out some drinking cash, you're back to the same problem of carrying specie or some such. You only have to fool the reader, after all.
Fooling the local reader only works for small quantities of money, quantities that constitute an 'acceptable risk' for the financiers.
For larger quantities, samples will be shipped out and checked at a 'clearing house'.
Let's face it, the 'reader' for today's banknotes is generally the human eye - possibly backed up with a UV light. Forgery takes place, but the expense of the forging process to fool even this most basic reader sets it into the realm of major organised crime, and you have to produce huge quantities to pay back the set up costs. Large operations like this are an easier target for Intel.
No group of PCs is going to forge cash or cards - not IMTU anyway!
Sure, you could buy a dodgy card and you might get a few drinks out of it, you might even pay your lodgings for a month or two - if Intel doesn't crack the operation and trace you first - hey, with some luck, you might even make back more than the card cost you.
However, you're not going to buy a lot of two hundred computers on your card or, heaven forbid, a starship.
Crooks don't buy a major purchase with forged notes and cards - that's what money laudering is for, you sell the forgeries to the street punks and use their clean money for the high level deal. Large transactions are thoroughly checked.
Any trading company worth it's salt will only do business with traders who have been thoroughly checked out. Even a letter of credit will only buy you so much leeway and for a limited time (forget that starship).
If you want to be a respected trader in these parts, you set up business and wait a few weeks or months for your credit rating to catch up with you. If you haven't done this, you're a lightweight, all you'll get is a few scraps from the table - and a visit from a bounty hunter if you cross the local Houses.
My guess is that a card alone might be good for two figure deals, maybe three. If you have supporting documentation, you might make the odd four figure deal.
Letters of credit should be good for four and maybe five figure deals, but you'd better have some other collateral or evidence of authenticity.
If you intend to make five figure plus deals, sit down, open an office or rent an apartment, wait for your credit reference to arrive and then work your way up in respectability with the local banks and Merchant Houses.