I asked Oropesa about a scenario that seemed the least fair. That won't happen, he answered. The attendants are covering each block every 15 minutes to half-hour. Once you leave, your tag is deleted. That's just the way the ordinance is written, he answered.
Some cities do it by the space.
Some do it by the block. Some are even harsher, and give you only one visit per block per day before assuming you are a violator. We sent half of the original 225 back, and agreed to use the rest. The company is paying the cost of re-fitting them. But a deal is a deal, so he is making the best of the pay stations.