On 10/03/2013 12:22 PM, Cal Frye wrote: > Rick Beebe wrote: >> There's no reason a similar system couldn't work for the Plugshare >> stations. And/or they could add a credit card reader. After all, almost >> every gas pump has one now. It's not clear to my why these EVSE vendors >> think they have to invent something new. > > A filling station has a telephone line that serves all their credit card > readers, including those on the pumps. This is an extra expense, > particularly if you're looking at a standalone, unattended charging > station. I won't discuss the security implications of transmitting > credit card data wirelessly, etc. here... > > The QR code or phone number approach is very smart and avoids the whole > business of dealing with credit card data in transit. All that is kept > on the back end, and all you are doing is managing login and duration data. Agreed, although charge stations are obviously connected to a wired infrastructure. To avoid phone lines, however, it would be trivial to use a GSM (cell) connection. Credit card data security is well defined and also relatively easily managed. That said, either solution would be preferable to the one-offs that these vendors seem to be struggling with.
--Rick _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
