Brazil's government-run payments system has become dominant

I've been living in Brazil for the last 20 years.

Pix revolutionised the way we transact in Brazil. I've used Pix to pay for things that cost only cents, and I have a friend who bought her house using Pix. The system just works for any transfer amount. And it's so easy to use.

Its speed is truly baffling, and so is its reliability. Never have I failed to make a Pix payment because of downtime. I never cease to be amazed by how fast money arrives in my Brazilian account when I make a withdrawal directly from my EUR wallet on Wise. I receive a push notification from my Brazilian bank before Wise finishes running the animation of confirmation of withdrawal. It's like magic.

And it's so widespread that nowadays I don't even question whether someone accepts Pix. When I get in a taxi, no matter how old the driver is, it's certain that they take (and prefer) Pix.

I've even had homeless people ask me for Pix instead of change on multiple occasions.

Cryptocurrencies don't stand a chance.

> I receive a push notification from my Brazilian bank before Wise finishes running the animation of confirmation of withdrawal. It's like magic.

After I had to add a special animation for one email system so that user was sure that "the core functionality of encrypting" was indeed working (it took milliseconds in reality), your experience doesn't surprise me that much. But, in my "IoT" system we have a mix of devices. Our service can handle most requests in sub millisecond, but some devices (gprs) need at least minimum 1 second (20sec is still within time limit) to respond only because of slow connectivity. And then I have a parking ticket machines where you press button, wait 2 seconds, it beeps, then after 2sec it changes screen to "printing ticket", then after 2s you get the ticket, where everything can be a local action (free ticket without payment). Technology is wild.

The parking ticket machine might make things deliberately slow because the printer needs to warm up or something.

Maybe it needs up to 5 seconds to warm up if it's in deep sleep, so splitting this into three 2s periods provides the least frustrating user experience.

As soon as you need to deal with real hardware things always start to get complicated.

More likely it's warming up the mobile comms state machine, without checking if it's actually needed. Unlike mobile phones which try to keep their data connection somewhat live, IoT things often drop back to the lowest state to save power (and possibly SIM cost)

https://www.sharetechnote.com/html/Handbook_UMTS_RrcStateCha...