Innovation is often defined as the introduction of new things or methods (see http://dictionary.reference.com). Another way one could think of innovation might be combining existing things or methods and using them in new ways; case in point, parking meters.
This is a topic I really had not thought about in a very long time, if ever. For more than twenty years we have lived in areas where there are no parking meters. On occasions when we went to visit a city where they have meters we would just park in a parking lot or tower. If we did have to use a meter on the street there was nothing novel about them. Put in your quarter and be sure to add time before the meter went red.
Now that I work in downtown Washington DC and have more opportunities to park in the city my experience has changed. Generally I don't park at all since most days I ride the train into the city and walk from the station to NPR. When there is a reason for me to drive to work, I usually just park in the underground parking facility at the NPR building, but sometimes there are off-campus evening events that take me out into the greater parking world. Several of those experiences caused me to get to know the more innovative approaches to street parking metering that have evolved as of late. Those experiences caused me to look around on my daily walk between Union Station and NPR. The result is a recognition that some smart innovation, in the sense of combining disparate technologies, has brought the world of street parking meters a long way from the simple coin-op days.
The first step-up in metering technology I see looks deceivingly like the traditional coin-op parking meters. In fact they are backwards compatible (geek speak) in that they actually will take change if you so desire that payment method. What's new is that they have more apps (geek speak again) available. For instance if you don't have coins in your pocket you can swipe your credit or debit card. Additionally, set up an account on the city's metering web-app, and you can update the parking time with a simple text. No credit card required in your hand, just in the account. What I like about the texting version of payment is if you have to renew your time you don't have to leave your meeting, event, etc. to run down to the meter and add time. You just send another text with the number on the side of the meter and instantly you have averted the threat of a ticket from parking enforcement.
The electrical power to do all this is furnished through a small solar panel and the connectivity between the meter and the network is done via wireless. Just a few years ago all of these technologies would not have been available in such a small package as an average-sized parking meter. What a smart way to combine different technologies that were not developed for anything like this sort of application.
I have seen two different versions of how a driver can show they have paid for their time via a kiosk. The first is what I think of as likely the earlier version. In this case the kiosk kicks out a small receipt on paper which the driver then places in the car dashboard. When the parking enforcement people come by they can read the receipt (typically with a bar-code reader) and determine if there is time remaining or if they should issue the bad kind of ticket. The negative to this version is, like the old coin-op or credit card swipe payment, a driver would have to physically go back to the kiosk and their car to pay for added parking time. On my motorcycle, the ticket is accessible to anyone walking by and another driver could adopt my ticket for their car.
What I consider the most advanced of all of these options is the kiosk that does not issue a receipt, rather it requests the license plate number on your car. Once entered, the parking enforcement people simply connect with the parking database and look up the license plate number to see if there is still time on the meter. Like the text option on individual meters, a text can be used to recharge this virtual parking meter saving the need to physically go to the space to recharge the time.