Would be interested in the math you did around this. That said, there are a few interesting things that could be added on to the service to make it more profitable--so it's not necessarily just the economics of parking.
MITMproxy is much more flexible--but steeper learning curve. Very command line-y versus Charlesproxy. I'd use charlesproxy for casually look at apps, and MITM if you needed more advanced stuff.
Not sure if this is why Square required you to sign, but rates for covering fraud are affected by whether you have customers sign or not for credit cards.
Whats the theory behind this? Many people (myself included) just scribble on the receipt because its inconvenient. Merchants never have a problem with this, meaning it could easily be someone who stole my card signing that receipt. Why does this unverifiable, meaningless "signature" change fraud rates?
I've always wondered about this myself as I'm not familiar with dispute resolution for something like this. However, it seems like part of the resolution if an establishment has cameras it seems like they can pull up the frames for the time displayed on the receipt, and present that as evidence that you signed (scribbling shouldn't matter). If it wasn't you in the video then it could be fraud or a friend/relative using your card.
I've only seen investigations for online orders, digital purchases, etc. and not for a restaurant-type setting so it would be interesting to know if video can be used.
If a business claims to collect signatures but doesn't save the receipts/signatures, they'll find it harder or impossible to contest chargebacks. So if nothing else it makes it slightly less likely that banks will eat the charge.
That said, I don't think the cognitive dissonance is because of some crazy fantasy however. The creator of bitcoin clearly went to some great lengths to avoid people knowing his actual identity. Given this, it seems very odd for them to have used their real name in all communication.
The hard part is parsing your gmail.mbox file from google takeout. You can use `egrep '^From [0-9]|X-Gmail-Labels' gmail.mbox` as a good starting place for finding the labels and dates for each email. Personally, once I had the data I stored that data in a SQL database and ran an aggregate query to count the emails for each label every month.
