Hi-Tech Arena

Snoopy  is a distributed tracking and profiling framework to perform some pretty interesting tracking and profiling of mobile users through the use of WiFi. The talk was well received (going on what people said afterwards) by those attending the conference and it was great to see so many others as excited about this as we have been. In addition to the research, we both took a different approach to the presentation itself. A 'no bullet points' approach was decided upon, so the slides themselves won't be that revealing. Using Steve Jobs as our inspiration, we wanted to bring back the fun to technical conferences, and our presentation hopefully represented that. As I type this, I have been reliably informed that the DVD, and subsequent videos of the talk, is being mastered and will be ready shortly. Once we have it, we will update this blog post. In the meantime, below is a description of the project. Background There have been recent initiatives from numerous gover...

Today we will create a small script that will allow us to run one or more commands on multiply Unix/Linux servers .. List of Commands / Tools : SSH :     (SSH client) is a program for logging into a remote machine and for executing commands on a remote machine.  It is intended to replac rlogin and rsh, and provide secure encrypted communications between two untrusted hosts over an insecure network.  X11 connections and   arbitrary TCP ports can also be forwarded over the secure channel.   CAT :    cat reads each file in sequence and writes it on the standard output. FOR :     for will allow us to run in loop until the end of input . ECHO :  echo writes its arguments separated by blanks and terminated by a new-line on the standard output VI :   it's just a text editor CHMOD :  The chmod command changes the permissions of one or more files according to the value of symbolic_mode_list or numeric_m...

Hi ALL it's Been  long time since last unix/linux tips , so today we will learn to use ps / grep / awk / xargs / kill in one long command .. . ps  :    prints information about selected processes. Use options to specify which processes to select and what information to print about them . grep :  The grep command searches the input text files (standard input default) for lines matching a pattern.  Normally, each line found is copied to the standard output.  grep supports the Basic Regular Expression syntax (see regexp(5)).  The -E option (egrep) supports Extended Regular Expression (ERE) syntax (see regexp(5)).  The -F option (fgrep) searches for fixed strings using the fast Boyer-Moore string searching algorithm.  The -E and -F options treat newlines embedded in the pattern as alternation characters.  A null expression or string matches every line. awk :    awk scans each input file for lines that match an...

The EU successfully pushed for voluntary adoption of a  cellphone charging standard  a few years ago, and it's now close to making that standard mandatory. The European Parliament has  voted in favor  of a draft law requiring that cellphones work with a common charger. Provided the Council of Ministers green lights the regulation, EU countries will have until 2016 to put it into their local laws; phone makers will have until 2017 to change their hardware. The charger requirement is a formality when  many phone designers  already support the concept, but it could force some companies to shape up -- and spare more Europeans from tossing out power adapters when they switch handsets.

Samsung's Galaxy S5 may be getting lots of smart new accessories, but the Korean smartphone maker is also making sure its lower-powered phones get some love too. After including various software usability functions in the Galaxy Core Advance at the end of last year, the company today introduced three new accessories that have been designed specifically to help disabled or visually impaired users do more with their Android device. First up is the Optical Scan Stand, a raised bracket that automatically triggers the phone's OCR features to recognize and read aloud text placed in front of the phone. There's also Voice Labels, which are similar to Samsung's NFC-equipped TechTile stickers, but let visually impaired users make voice notes or record short explanations on how to use various devices around the home. Perhaps the most impressive accessory of the three is Samsung's Ultrasonic Cover: a specialized case that uses sound waves to detect people or objects (in...

When UK Prime Minister David Cameron gave a speech at CeBIT this year, what examples did he use to highlight tech innovation in Britain? Yes, ARM and Imagination were on his list, but he also referred to the tiny, Linux-based computer called Raspberry Pi, which has now sold over 2.5 million units. In a timely fashion, the Pi's makers, element 14, have just announced a new $33,Wolfson-powered audio card that should give the device a broader range of functions. The add-on board fits right onto the Pi's P5 pins and carries a Wolfson audio processor that supports high-res audio up to 24-bit / 192KHz, which can be played via a direct connection to an amp over 3.5mm line-out or alternatively via a digital S/PDIF output. Audio recording, meanwhile, comes courtesy of two onboard MEMS mics (useful for things like voice control), a 3.5mm mic jack and a digital S/PDIF input. It's true that some of these audio capabilities have already bee...

Amal Graafstra snaps on a pair of black rubber gloves. “Do you want to talk about pain management techniques?” he asks. The bearded systems administrator across the table, who requested I call him “Andrew,” has paid Grafstra $30 to have a radio-frequency identification (RFID) chip injected into the space between his thumb and pointer finger, and as Graafstra describes Lamaze-type breathing methods, Andrew looks remarkably untroubled, in spite of the intimidatingly high-gauge syringe sitting on the table between them. Graafstra finishes his pain talk, fishes a tiny cylindrical two-millimeter diameter EM4012 RFID chip out of a tin of isopropyl alcohol, and drops it into the syringe’s end, replacing the RFID tag intended for pets that came with the injection kit. He swabs Andrew’s hand with iodine, carefully pinches and pulls up a fold of skin on the top of his hand to create a tent of flesh, and with the other hand slides the syringe into the subcutaneous layer known as the fascia...