Liberty PlugIns has developed a secure access technology for electric vehicle charging stations that does not require networks or proprietary billing systems. Liberty’s “Synchronous Codes” system enables charging station owners to create and issue charge authorization codes to control access to the charger and prevent unauthorized use. These codes can be issued for a single charge or for a whole year and the system does not require any physical or wireless communications with the charger itself.
Liberty has worked closely with leading parking access and revenue control (PARC) vendors to integrate Synchronous Codes with their payment kiosks, thereby allowing parking lot owners and operators to add EV charging stations to their existing revenue collection systems. This will facilitate the growth of EV charging infrastructure by incentivizing these owners to install chargers now and control their revenues without having to interface with a proprietary third party billing system.
In addition, these charge authorization codes are perfect to send over cell phones, and Liberty recently introduced Pay-by-Phone Charging services with mobile payment providers MobileNow, Parkmobile, and Verrus’ PayByPhone. Cities and lot owners will be able to start generating EV charging revenues with nothing more than a “Liberty Enabled” EV charger and a place to install it. Parking and EV charging payment can be made using any cell phone, iPad or similar mobile computer device. “Pay By Phone” is popular with younger and tech savvy consumers, and is going to be a real game changer” said Forest Williams VP Sales and Marketing at Liberty PlugIns.
Synchronous Codes: It’s all about timing!
Charging authorization codes are generated using a time-based predictive algorithm that runs locally on parking payment kiosks or on remote servers in the case of Pay-by-Phone services. A receiver card is installed in the charger along with a keypad for authorization code entry. The pay station or mobile payment server generates an authorization code using a common clock signal (i.e. synchronous) with the receiver cards on the charger. The code is recognized as invalid, the charger is unlocked and the charging period is set
Here are some of the significant features of the Synchronous Codes access control system:
- No Networking: Synchronous Codes uses UTC clock signals and requires no physical or wireless network connection whatsoever.
- Choice in Hardware: Ecotality and Coulomb have very limited hardware choices. In contrast, LPI’s Synchronous Codes is available as an option on ClipperCreek, Eaton, Schneider, Siemens, G.E., PEP, and Control Modules Inc.
- Access Control (no billing): Owners can generate and issue codes to key staff or guests with any valid period from 20 minutes to 1 year or longer that can be used at any unoccupied charger. LPI can also work in conjunction with HID and other RFiD security card systems.
- Choice in Billing Systems: Ecotality’s Blink and Coulomb’s ChargePoint networks are proprietary billing systems. Synchronous Codes can be integrated into the city’s existing parking access and revenue control (PARC) system, thus permitting the collection of EV charging fees on the existing pay stations and accounting software.
I like the whole idea of an open source charge EV system, less costly and easy to use. More particularly I think everyone is going to be happy not to have to sign cumbersome yearly contracts or monthly subscriptions. With the Liberty Plugins solution there are no billing fees or subscriptions, unlike both Blink and ChargePoint which assess monthly access fees and per-transaction fees. There are no such fees for Synchronous Codes beyond a modest Code Security Maintenance fee.
For more information you may contact:
Chris Outwater
President and CEO
(805) 886-3300
coutwater@libertyplugins.com
Forest Williams
VP Sales and Marketing
(818) 216-5776
forest@libertyplugins.com
This article was written in consultation with Forest Williams, VP Sales & Marketing at Liberty Plugins.
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