This is a godsend to me since I never have enough coins for the meter (especially on days when I have two or more meetings in different parts of the city centre). And it also means I don't have to use the awful MPark service anymore, which is being phased out at the end of this month anyway (awful because the meters were out of order at least 50% of the time in my experience).
I've already used the service several times and it works flawlessly. Whenever you text your parking details to Parking Tag you get a text message reply noting when your time is up. They even send you a text 10 minutes before your time is up just as a reminder. This is one of those technology-driven advances that really does make life a lot easier and a great deal less stressful.
I'm with Kevin Kelly - the smartest commentator on big picture technological trends on the planet - when he observes that:
In our ceaseless collective generation of new technologies, we technology boosters can invent more appropriate tools for minimalism, even though they are not doing that for us. Nonetheless, the Amish and minimites have something important to teach us about selecting what we embrace. I don't want a lot of devices that add maintenance chores to my life without adding real benefits. I do want to be slow to embrace technology that I can back out of. I don't want stuff that closes off options to others (like weapons). And I do want the minimum because I've learned that I have limited time or attention.
I think I can put it this way: What we are seeking is the minimum amount of technology that will generate the maximum number of options for all.
Parking Tag is just that: an ideal combination of technological simplicity, efficiency and liberty. Well done.