Now, in a century of popularity the Internet and various content, including media which size in HD quality can occupy several Gigabyte most sharply there was a problem of a high-speed file transfer on a network. As an example it is possible to consider work of news television station where the reporter, being on other continent, has to transfer quickly the reporting shot in high quality to the central studio for processing and start in air. It is clear, that here transfer speed plays a key role as news will not be news any more if it appears in couple of days.
Or, for example, in a case when floating boring installation on which there is only satellite channel has to transfer a cube of geophysical data of drilling of a well for interpretation to high-performance computer centers, every day can lead delays to losses.
Wi-Fi is one of main types of a wireless communication now. The majority of communication devices are equipped with this wireless type of communication. But here smart gadgets, i.e. devices with the smart prefix usually do not use Wi-Fi for communication with each other. Exceptions are, but there is not a lot of them.
Vendors reluctantly go for embedding of such communication modules in smart gadgets as Wi-Fi demands considerable costs of energy. And it is a real problem for devices which have to be small, cheap and work in a standalone mode months or even years. But now this problem is gradually solved, apparently. Wi-Fi Alliance is going to certify the Wi-fi HaLow standard, the main for which serves the IEEE 802.11ah specification unconfirmed so far.
At the beginning of the research Miller and Valasek tried to crack the multimedia Jeep system through Wi-Fi. The vendor of the car, the Chrysler company, offers an opportunity of use of Wi-fi on a subscription. It turned out that this wireless communication to crack rather easily because the password on it was generated automatically on the basis of time when the machine and multimedia system turned on for the first time.
Theoretically, measuring time to within seconds, this method is quite reliable, considering a large number of options of time. But if you know at least year of production and will guess month, then search will be limited by 15 million combinations. If to reduce time to a day time, there will be already 7 million combinations. And it is already rather quite good result – it can be probrutforsit for an hour.
The problem is that during the whole hour it is necessary to be near this jeep to remain within reach of Wi-Fi. But researchers found other way. It turned out that the password for Wi-Fi is created before in system are set date and time – that is, default time of counting plus several seconds for that the on-board computer was loaded.
And this time makes exactly January 01 2013 00.00.32 GMT.
1 year, 5 months ago
In our blog on Habré we describe curious schemes of upgrade of corporate telephony which can be built by means of FMC technologies, cloudy automatic telephone exchange and integration with CRM systems. Judging from the fact that nearly a half of our clients is interested in integration solutions, and snow-white clouds in original state only of telephone SaaS to very few people are already interesting, we precisely guessed a trend in the VoIP market and we move in a right direction. Usually integration of telephony, cloudy automatic telephone exchange and mobile communication — destiny, at least, of small and medium business and we too so considered until recently, yet it did not become clear that IP SIM cards, the virtual automatic telephone exchange and miracles of VoIP can work also on micro business. On business, where the entrepreneur of "one men show" and "shvets and the reaper and on a fife igrets" where sales are based on promotion of goods through free declarations, the entering calls from clients by all Russian Federation. In other words, today we will tell about what we thought up for the aid to the entrepreneurs earning from sales through bulletin boards.
1 year, 6 months ago
Hi, Habr! Today we will tell how to owners of restaurants and cafe to avoid penalties for violation of the legislation regulating the organization of public Internet access. Let's remind that in the summer of last year there was a resolution of the government of Russia No. 758 according to which the organizer of public Wi - Fi - access has to perform identification of users. A usual anonymous input in a network now beyond the law.
1 year, 6 months ago
Passed nearly a year since we began to have the blog on Habré. During this time it was described several methods of integration of our AltegroSIM, virtual automatic telephone exchanges, CRM and all other, cloudy what is used in business for automation and optimization. For ourselves became opening how significant place cellular communication takes in a communication field of any company and as far as, even the smallest, at first sight, upgrade/optimization, is capable to simplify life of managers, couriers and their chiefs. And business even not in a factor cost on calls, business is more in business processes. Occasionally, correctly built scheme of interaction of mobile and office employees and clients not only reduces the size of the monthly account from the telecom operator, but also influences efficiency of sales in general. Today we will describe a curious case which facilitates life of a classical tandem "a delivery service — the client".
In our previous materials [1, 2]it was talked of how the technology of iBeacon indicators is arranged, time to tell it to implementation about examples came now. In this material we picked up and transferred articles about projects on navigation in rooms from TechCrunch: you learn as well as why this technology at one of the American stadiums and in large retail network was implemented.
1 year, 6 months ago
Hi, Habr! Second day of online broadcast of the main Chrome-action of this year: Google Chrome Dev Summit 2015 will begin very soon!
In a night nothing happened to geography, Palo Alto both was on other party of the globe, and is. Forward translation will take place in not the most convenient time (the beginning — at 20:30 on Moscow time), but even if you will not be able to look at it on the air, videos will become available tomorrow.
Unfortunately, there is it on other side of the globe so the most part of broadcasting is necessary for our night (the beginning — at 20:00 on Moscow time), nevertheless, to pass by such action very difficult. So, here for what you waits:
At the choice of the wireless equipment Ubiquiti each user asks standard questions: What speed can be received at this distance? What model of the equipment it is better to select? Whether it is possible to organize wireless link in general?