Edit, sorry, missed the part where you were just talking about tipping.

Perhaps that would be easier to slip past the powers that be, though it might still run afoul of centralized company rules.
Does any one think it would be a good idea to implement this with the Taxis and uber drivers as a way of tipping them. All they need is a small QR code and a small logo. Just a though. It could get wide spread easily. The coinomi app would make this easy.
Taxis are pretty regulated in NYC. And taxi alternatives are pretty centralized through their respective apps/megacorps. Either is gettable in theory, but you'd have to convince large companies, not individual drivers, so probably not until there are NYC ATMs all over the city. On the other hand, I could kind of imagine NY Coin giving rise to a decentralized competitor a la uber/lyft.
Imagine a version of the NYC wallet that has two modes, rider and driver, and lets riders send their coordinates to drivers to hail them. In theory, an NY Coin enthusiast might create such a platform without even trying to get a percentage fee from it, leaving profits entirely to the drivers for the purpose of increasing the value of their own NY Coin hodlings. As long as the app had a robust review system for drivers, you wouldn't even need a company to vet. Non-payment could be prevented by automating fares so once the driver picks you up, you agree in the app to pay a particular fare and the driver starts driving after the in app meter syncs up. Distance is measured by gps, time by a time server, price for both are displayed on the fare screen before accepting fare. Freelance drivers might really dig such a system to avoid the unfair policies of companies like uber.
A future NY Coin foundation might make something like that if no individual were up to it. I'd probably donate to that cause, but probably only after ATMs were in place. If cars were driving around New York City with the NY Coin logo on them, the advertising value of that to the network would be off the charts.