[Tagging] Charging stations: Authentication

[Martin Koppenhoefer]

sent from a phone

> On 16 Jul 2021, at 22:32, Danilo <mail at dbrgn.ch> wrote:
> 
> For example, you can use an RFID member card or tag to authenticate yourself and pay through your account. Sometimes you can pay by app. Or by debit card. Sometimes there's no authentication, and the electricity flows freely.


why does one have to authenticate in order to charge, wouldn’t payment be sufficient?


> 
> For me, a few questions arose:
> 
> - Some stations have a QR code that can be scanned. Afterwards, you enter your credit card details to pay. Is this "authentication:money_card" or "authentication:none"?


money card is (I suppose) a system for example used in Germany (Geldkarte) where a chip can “store”some amount of “cash” and you can pay offline. If the chip breaks you loose the money (i.e. there is no backend offsite). Authentication is not possible with this system  (AFAIK).


> I'd tend towards using "authentication:none", because no authentication/account is required (but a money card is).
> - What's the difference between money_card and debit_card?


see above. A debit card is used to authenticate transactions from a bank account, a money card has the money “stored on the card”


> Which one is Maestro?


debit 


> Which one is a Mastercard that must be pre-paid?


debit


> - Does a money card or debit card even make sense as an authentication method? Usually those are not used as an authentication method, but instead as a payment method (without authentication).
> - Which category would an RFID tag be? It's not a member card, but it's not NFC either.


the term “member card” seems orthogonal to the others you mention, because it doesn’t relate to a system or technology. It is used to demonstrate that you are part/subscriber of some network.


> - How do I know whether a membership card is NFC or RFID?


NFC is an RFID standard 


Cheers Martin 
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