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Comment Brazil's PIX has no fee (Score 1) 45

It is instant money transfer with *no fees*. Small shops will give you the same discount as if you pay with cash (around 5% or the credit card fee). The system is really handy, as you can associate your phone number or email to your PIX so it serves as a handle/alias when you receive money. You can also generate a random key to disclose less data with the sender. The challenge has been educate the population and make the system safe against scammers and regular muggers. It is a lot easier for scammers to mass message people on WhatsApp and lure them to send some money. Also you might get forced to send money to a temporary account (usually a owned by someone that has no idea about it, another victim) at gunpoint, so another criminal will withdraw the money at an ATM. Pix is improving and the mass adoption tells it was well received by the population, specially small business. For the people concerned about digital cash, government overwatch, etc it is a valid conversation to have, but remember that in Brazil you will deposit your paper money in the bank anyway because it is just not safe to carry big sums of money around.
Firefox

Emscripten and New Javascript Engine Bring Unreal Engine To Firefox 124

MojoKid writes "There's no doubt that gaming on the Web has improved dramatically in recent years, but Mozilla believes it has developed new technology that will deliver a big leap in what browser-based gaming can become. The company developed a highly-optimized version of Javascript that's designed to 'supercharge' a game's code to deliver near-native performance. And now that innovation has enabled Mozilla to bring Epic's Unreal Engine 3 to the browser. As a sort of proof of concept, Mozilla debuted this BananaBread game demo that was built using WebGL, Emscripten, and the new JavaScript version called 'asm.js.' Mozilla says that it's working with the likes of EA, Disney, and ZeptoLab to optimize games for the mobile Web, as well." Emscripten was previously used to port Doom to the browser.
Programming

What Every Programmer Should Know About Floating-Point Arithmetic 359

-brazil- writes "Every programmer forum gets a steady stream of novice questions about numbers not 'adding up.' Apart from repetitive explanations, SOP is to link to a paper by David Goldberg which, while very thorough, is not very accessible for novices. To alleviate this, I wrote The Floating-Point Guide, as a floating-point equivalent to Joel Spolsky's excellent introduction to Unicode. In doing so, I learned quite a few things about the intricacies of the IEEE 754 standard, and just how difficult it is to compare floating-point numbers using an epsilon. If you find any errors or omissions, you can suggest corrections."
The Courts

Can Avatars Make Contracts? 134

edadams sends in a story about the legal questions that are starting to crop up over property disputes in virtual worlds. A lawsuit in March 2008 that stopped one Second Life user from selling a virtual product created by another user marked the beginning of a significant amount of casework for several law firms, in large part due to the way Second Life's currency interacts closely with real money. (And yes, apparently the product in that particular case was for cybersex — did you have to ask?) "As transactions grow in volume, it's inevitable that disagreements will crop up. Linden says that although it will enforce its terms of service, including its ban on violating other users' intellectual property, it can't settle most disputes for users." A lawyer for one intellectual property firm handled a case in which the co-ownership of virtual real estate had to be determined, ending with a financial settlement given to two users who helped a virtual land developer run a group of Second Life islands. As virtual worlds get more popular and their business models more directly affect real-life finances, we can expect these legal issues to become more common as well.

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