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Category: Telecommunications Engineering

New company’s technology lets quadriplegics use the phone without physical assistance

A day after Oded Ben Dov appeared on Israeli television to promote his video game technology, which allowed players to control their games by moving their heads, a viewer called him with another suggestion for the software. “I can’t move my arms or legs,” the viewer told him. “Can you make a smartphone that I can use?” That conversation more than four years ago led to the creation of Open Sesame, an app that allows people to control a…

Stopping fraudsters by changing products – Lyft Engineering

This medium post is on joint work from the Fraud and Identity teams @Lyft. Key contributors include Sam King, Will Megson, Steven Liu, Mike Ross, Ryan Choi, Ryan McGowan, Glen Robertson, Adam Wushensky, Donald Chen, Helen Lau, and Siwei Shen. Goals Our overall goal is to prevent account takeover, stop scripts and automated apps from accessing our servers, and minimize financial loss due to fraud. We focused our efforts on identifying three fundamental properties: Identifying automation or non-human traffic. Identifying…

Unifying Mobile Onboarding Experiences at Uber

Uber is committed to creating safer and more reliable transportation solutions for users worldwide. To fulfill this vision, mobile onboarding—an app’s entry point—must be quick, painless, and easy-to-navigate. Before we released Uber’s new rider app in November 2016, our engineering teams created unique rider experiences tailored to specific markets, and as such, responsibility for mobile onboarding was divided among multiple teams. Although successful for meeting regional demands, these duplicated engineering efforts resulted in a fragmented system that increased overall developer…

There’s Always Cache in the Banana Stand

We’re happy to announce that we now support all HTTP Cache-Control response directives. This puts powerful control in the hands of you, the people running origin servers around the world. We believe we have the strongest support for Internet standard cache-control directives of any large scale cache on the Internet. Documentation on Cache-Control is available here. Cloudflare runs a Content Distribution Network (CDN) across our globally distributed network edge. Our CDN works by caching our customers’ web content at over…

Tackling the missing miner problem with wireless sensor networks

A matchbox-sized circuit board with a short aerial could save lives by transmitting the vital statistics and location of miners missing underground. This fledgeling wireless sensor network technology is the result of collaboration between the Wits Mining Institute, the School of Electrical and Information Engineering at Wits, and the Communication Networks Laboratory at the University of Bremen in Germany. “Through this collaboration, we are designing, developing and testing a technology for tracking miners trapped inside a collapsed underground mine,…

2017 Year in review: Building immersive experiences | Engineering Blog | Facebook Code

This week we’re publishing a series of posts looking back at the technologies and advancements Facebook engineers introduced in 2017. Our previous installments focused on data centers and connectivity. We know that many people find communities on Facebook based on common geography, interests, or causes they care about. One way that Facebook is helping people build these connections is by breaking down language barriers with machine translation. Providing fast, fluent translations is a complex challenge. People use dozens of languages…

Balancing open source and proprietary IP—they can co-exist

Open source software can provide significant benefits to an organization—it can decrease product development time, distribute development across a community, and attract developers to your organization. It’s because of these benefits that we at Dropbox love open source. However, some organizations shy away from it due to perceived risks and fears around lost intellectual property (IP) rights. You’re not alone if you’re worried that once you’ve incorporated open source into your products or open sourced your own code that you’ve…

The Curious Case of Caching CSRF Tokens

It is now commonly accepted as fact that web performance is critical for business. Slower sites can affect conversion rates on e-commerce stores, they can affect your sign-up rate on your SaaS service and lower the readership of your content. In the run-up to Thanksgiving and Black Friday, e-commerce sites turned to services like Cloudflare to help optimise their performance and withstand the traffic spikes of the shopping season. In preparation, an e-commerce customer joined Cloudflare on the 9th November,…

2017 Year in review: Better global networks | Engineering Blog | Facebook Code

This week we’re publishing a series of posts looking back at the technologies and advancements Facebook engineers introduced in 2017. Read the first part of the series about data centers here, and check back each day to learn about a different part of the stack. Part of what makes our data centers some of the most advanced facilities in the world is the idea of disaggregation — decoupling hardware from software and breaking down the technologies into their core components.…

– Airbnb Engineering & Data Science – Medium

A Structure for Scaling Service Development By Liang Guo, Frank Lin, Junjie Guan Airbnb is moving its infrastructure at an accelerated pace towards a SOA (Service-Oriented Architecture), but moving from a monolithic Rails service towards a SOA while building out new products and features is not without its challenges. In this post, we share what we have designed and built to scale the development of services — using the same number engineer-hours to build more backend services that are more robust, performant,…