QUOTE (Shiloh @ Sep 12 2008, 04:45 PM)

Okay, so just having a commlink gives free access to small quantity transactions, without any buggering about with PINs or biometrics? And every tiny transaction gets checked against... something? That, I don't buy.
I don't know about SR4. From what I remember, however, it was the user's choice. He could set it to either require PIN/biometrics for every purchase or not, to either transfer lots of data to the seller or only the minimal necessary. There may have been one to not transmit any data to the seller, but the data is still getting transmitted to the bank and the bank is just affirming it's okay, so the information is still tracked, even if not tracked by the seller himself.
In SR3, I was under the impression that it always requires authentication, although I couldn't find a page quote for you. Certified cred is the exception.
QUOTE
I think the point I'm trying to make, rhetorically, is that "checking stuff" costs money,
Checking if the account has money costs money, since you have to send a message to the credit card company. I believe they charge about .25% of the transaction amount, or some flat fee, per charge. It doesn't cost anything additional to require a PIN or check your signature, but it does cost time (and yes, time is money). I've read up some on how credit cards worked, and I've not seen anything anywhere which changes the price based on how many security features you use or don't use (although I believe you accept increased liability for theft if you don't use the security features - probably why some stores don't require a signature for under $25. They decided the risk of theft * $25 is less than the value of the time spent prompting for a signature.)
QUOTE (Tarantula @ Sep 12 2008, 05:01 PM)

Most smaller ones will impose a minimum charge before allowing you to pay with credit.
Do note, that is in violation of their credit card agreement. If they charge you $.25 for using a Visa card instead of cash, if you call Visa, they will refund you and deal with the vendor appropriately. When Visa set up their machine, it was on the condition that every buyer get charged the same whether they're using cash or credit card.