Articles about wifi

Hammer, spanner and screw

OpenWrt gets update in face of FCC's anti-flashing push

The open router Linux disto OpenWrt, 15.05 “Chaos Calmer”, has hit the intertubes. One highlight of the release is an update to Version 3.18 of the Linux kernel, and security has been upgraded with ed25519 package signing support, and support for jails and hardened builds. However, the big news – at least according to the …
NASA's Wi-Fi reflection chip

Wi-Fi 'reflector' hooks you up at 0.1 per cent of current power budget

By using absorption and reflection to indicate data states, NASA reckons it's created a Wi-Fi device for the wearable market that uses just 0.1 per cent of the power of ordinary transceivers. Working with Frank Chang at Caltech UCLA, the JPL boffin Adrian Tang is keen on ways to let devices with relatively low communications …
Chromecast ethernet dongle

Chromecast gains wired Ethernet dongle

Google's released an odd accessory for its Chromecast TV dongle: an Ethernet dongle. Chromecasts plug into a telly's HDMI port and deliver video beamed over WiFi. That arrangement usually works well, but strikes problems when WiFi goes wonky. Enter the Ethernet adapter for Chromecast, which offers a power supply, USB cable …

This box beams cafes' Wi-Fi over 4kms so you can surf in obscurity

Rhino Security founder Benjamin Caudill has created a tool to help privacy pundits (and criminals) connect to wireless networks from a distance of four kilometres, in a bid to foil eavesdropping authorities. The Proxyham Raspberry Pi hardware box is a complement to toolkits such as Tor that mask the source of web traffic. …
Darren Pauli, 3 Jul 2015

Oi! 'Hands off America's Wi-Fi spectrum' yells, er, the cable lobby

America's cable broadband lobby has decided it doesn't like proposals for unlicensed LTE, claiming that LTE-U rollouts will interfere with citizens' WiFi kit. LTE-U is a hot topic among spectrum-hungry mobile carriers, since it would let a base station look around, and if it spots radio quiet in (for example) 3 GHz or 5 GHz …
Nikola Tesla's fake lightning, Recuerdos de Pandora on Flickr CC2.0 license

Power your temperature sensor with this BONKERS router hack

The Internet of Things world could power a lot of things with WiFi signals, if only access points broadcast all the time instead of when they've got something to say. There's a bucket of research into scavenging ambient signals to power junk stuff things, and WiFi is a popular energy source, but it's intermittent. As the …
Battlestar Galactica's Commander Adama

Make Adama proud: Connect your Things wisely, cadet

Internet of Lawnmowers Last time I explored the concept of geofencing, and how low-power technologies are used both to create "virtual walls" and to create beacons. This time, I’m going to take a look at the individual technologies that Internet of Things (IoT) devices will use to communicate for the next several years. Infrared Infrared beacons …
Trevor Pott, 27 May 2015
China

Sniffing and sharing Wi-Fi passwords? There's an app for that!

China's internet services aren't stellar, which is why the nation's State Council recently decided to spend US$182bn on network construction in an effort to speed up local connections. While Chinese citizens wait for all that to happen, plenty are instead turning to an app called Wi-Fi Skeleton Key that collects credentials …
Simon Sharwood, 25 May 2015
Cellular antenna. Source: Vxla/Flickr

FCC wants to know if carriers can grab some of YOUR WiFi signal

The United States' Federal Communications Commission (FCC) is looking over a key item on the telco industry's wish-list: spectrum sharing to try and cope with a capacity crunch. While its consultation paper, here, focuses on “LTE-U” (LTE-Unlicensed), current developments will probably also be relevant to the looming 5G …

This tool detects then ATTACKS evil twin access points

Mohamed Idris has created a tool to help network administrators discover and DoS rogue access points. The EvilAP Defender open source tool published to GitHub can be run by admins at intervals to determine if attackers are attempting to get their users to connect to malicious networks. Those evil twin attack networks are …
Darren Pauli, 2 Apr 2015
MIT's picowatt radio chip

MIT demos picowatt radio for Internet of Things

MIT boffins working on low-power radio have given the International Solid State Circuits Conference (ISSCC) an insight into how standby power can be cut in Internet of Things devices. It's a thorny problem: if, for example, a sensor is waiting to be polled so it can answer with a snippet of data, the radio has to be in a state …
Long exposure shot showing patterns made my moving lightsabers

Wi-Fi beam-steering tech could KILL OFF fixed home networks

Analysis Veteran US antenna team Ethertronics has brought out what it describes as an active antenna system that can offer beam steering for Wi-Fi. The system sits in either the client end of Wi-Fi to stimulate the return path or in an Access Point and will work with any Wi-Fi chip architecture and boost performance by between 15 per …
Faultline, 20 Feb 2015
Oxford University's multi-gigabit visible light comms demo

Lightbulb moment for visible light networking: 200 Gbps without a fibre

If you think the multi-gigabit per second performance promised by WiFi communications is hot, think again: research out of Oxford University is claiming 100 Gbps and beyond in homes using free-space optics. The research, led by photonics engineer Dominic O'Brien, uses a base station to communicate with computers using light …
Measurement train NETWORK RAIL

Free WiFi coming to UK trains ... in two years

Future operators of train franchises in the UK will have to include free WiFi in their bids, Rail Minister Claire Perry announced on Wednesday. The bad news is that there are no new franchises up for grabs until 2017. The good news is that the Department of Transport has found £50 million "to ensure WiFi is available on …
Simon Sharwood, 12 Feb 2015

US DoJ okays IEEE's patent troll BAN-HAMMER

The US Department of Justice (DoJ) has okayed new IEEE standards licensing rules designed to end some of the seemingly-endless lawsuits over standards-essential patents - and the trolls aren't happy. A key step in bringing the new rules into effect, a “Business Review Letter” from the DoJ, has been completed with the …
Virgin America plane in flight

GoGo in-flight WiFi creates man-in-the-middle diddle

In-flight wifi service GoGo, once accused of facilitating excessive interception access for US law enforcement, has now been spotted using fake Google SSL certificates to spy on net traffic and prevent passengers from accessing video streaming services. Google engineer Adrienne Porter Felt (@__apf__) noticed the fake SSL …
Darren Pauli, 6 Jan 2015
hand with thumb up

Disturbance in the force lets phones detect gestures with Wi-Fi

How would you like a phone that gives you gesture recognition - without needing to buy a new phone? That's the tantalising prospect offered by a project at the University of Washington (UoW), which uses the existing Wi-Fi capabilities of consumer-grade devices (laptops were used for the research paper) to work out peoples' …
The Internet from the IT Crowd

The IT Crowd's internet in a box gets $240k of crowdcash for a cause

Back in February we reported on a crew called Outernet and its plan to float a network of tiny satellites to deliver internet access around the world and in the process “bypass censorship, ensure privacy, and offer a universally-accessible information service at no cost to global citizens.” Outernet's made some progress …
Simon Sharwood, 21 Nov 2014

Create a news alert about wifi, or find more stories about wifi.

Biting the hand that feeds IT © 1998–2017