I'm not so enamored with the technology. Privacy issues, spying by local officials for code compliance, etc. give me pause for concern.
I used to live in Hillsborough County Florida and every year they hired a company to produce aerial photos in a book with the real estate platted out on one page and the aerial photo of that area on the facing page -- They were doing it at least as far back as the early 1970's when I bought my house, so it's not like it's something new.
The plat books, with photos, were available at the County offices or at the Public Libraries. You could look up the property designation numbers on the plat page in other records to find the owner, valuations, taxes paid, etc., all public records, and Yes, likely the county inspectors used them for code compliance with building permits, etc. Now that stuf is on-line for many tax assessor's offices.