Thursday, 27 December 2018

Problems that may come while implementing IOT || techtalksgroup ||


In the coming century, the biggest threat to us will not be the wars between the countries or states. The biggest threat or the war that we should be concerned about is the cyber war. It is a direct threat to our privacy, our private conversations, moments, pictures-everything that sums up our life.
Technology has always been a double-edged sword. With all the benefits and advantages, follows unknown and unprecedented threats. For us to succeed and work in harmony with technology, we need to address and confront the threats that it carries. Simply ignoring or putting them aside is not the solution.
In fact, it is the last thing we can do bring the house of cards crashing down. Ignoring a problem is the same as inviting the problem. And similar is the case with IoT, Internet of Things.
A very less number of people genuinely address the threats and challenges IoT could or will face as part of its journey.

Here Are the 5 Biggest Security Threats and Challenges for IoT

Anything which is connected to the Internet is open to threat. Like the saying goes, ‘There are two types of companies. One which has been hacked and one which does not not know it has been hacked.’ This rightly sheds some light on the fact that, we are always vulnerable. It all depends upon how less vulnerable you are.
Until and unless we do not address and come face to face with the evil of Internet, we would not be able to create counter measures that protect us from these threats.
Any threat, be it on IoT or on a website, is backed by a purpose. In 100% of the cases, these threats or attacks are human generated. The purpose may vary depending upon the intruder’s target:
i) Since IoT devices are used and operated by humans, an intruder may want to gain unsolicited access to the human.
ii) By eavesdropping on the wireless IoT devices the intruder may want to catch hold of confidential information.
iii) IoT devices run on low power and less computing resource capability, due to this they cannot afford to have complex security protocols. Hence, it becomes an easy target for intruders.

Vulnerability

The most basic and easy to pick threat to IoT devices is its vulnerability. Companies providing IoT solutions start with addressing this issue first before commemorating on the underlying software.
We also need to understand, vulnerability can be of two types: Hardware and Software. Hardware vulnerability is often tough to detect or penetrate. However, it is even tougher to repair or overhaul the damage.
Software vulnerability points towards a poorly written algorithm or a line of code with a backdoor. This backdoor can easily provide access to intruders prying for such moments.

Easy Exposure

This is one of the most fundamental issues faced by IoT industry. Any device, if unattended or exposed to troublemakers, is an open invitation to discomfort. In most of the cases IoT devices are not resilient to third-party exposure-they either lay open, easily accessible to anyone.
This means that an intruder can either, easily steal the device, connect the device to another device containing harmful data, or try to extract cryptographic secrets, modify the programming or even replace those devices with malicious ones of which the intruder has complete control.

Threats

Threats can be of two types: Human threat and Natural threat. Any threat arising from natural occurrences such as Earthquakes, Hurricanes, Floods or Fires can cause severe to very severe damage to IoT devices. In such cases, we often take a backup or create contingency plans to safeguard the data. But, any damage caused to the devices physically cannot be restored.
Today, IoT solutions have matured over time. Devices today have evolved to be waterproof. It is a long journey before IoT solution providers come up with something which is fireproof or earthquake proof.
On contrary, we do everything in power to curb any human threats to IoT devices. These threats are usually malicious attacks.

Human Attacks Can Be Further Identified As:

Cyber reconnaissance: Where an intruder uses cracking techniques and malicious softwares to conduct espionage on the targeted user; to either gain access to secret information or sabotage the existing systems.

Brute Force attacks on passwords: Intruders make an attempt to guess the user’s passwords with the help of an automated software which makes innumerable attempts until the right password grants the access.

Stalking or Tracking: User’s each and every move can be tracked or traced by the UID of the IoT device. Tracking a user gives out away their precise location in time where they wish to remain anonymous.

Controlled Attacks: Using Denial of Services (DoS), Trojans or Viruses are some examples of controlled attacks. In such cases, intruders develop a particular Virus which is programmed to function in a certain manner in order to destroy the host device. Programmers and developers have to be vigilant while working on current IoT solutions since hackers today have strong artillery to launch cyber attacks around the globe.

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Monday, 10 December 2018

Alibaba's Voice Asistant is smarter than Google's Voice Asistant. Check it out !! || techtalksgroup ||



In May, Google made quite the splash when it unveiled Duplex, its eerily humanlike voice assistant capable of making restaurant reservations and salon appointments. It seemed to mark a new milestone in speech generation and natural-language understanding, and it pulled back the curtain on what the future of human-AI interaction might look like.
                But while Google slowly rolls out the feature in a limited public launch, Alibaba’s own voice assistant has already been clocking overtime. On December 2 at the 2018 Neural Information Processing Systems conference, one of the largest annual gatherings for AI research, Alibaba demoed the AI customer service agent for its logistics company Cainiao. Jin Rong, the dean of Alibaba’s Machine Intelligence and Technology Lab, said the agent is already servicing millions of customer requests a day.

The pre-recorded demo call involved the agent asking a customer where he wanted his package delivered. In the back-and-forth exchange, the agent successfully navigated several conversational elements that demonstrated the breadth of its natural-language capabilities.

Take this exchange at the beginning of the call, translated from Mandarin:

Agent: Hello, I am Cainiao’s voice assistant. I am—
Customer: Hello.
A: Yes, hi, you have package scheduled for morning delivery to 588 Culture West Road. Is it convenient for you to receive?
C: Who are you?
A: I am Cainiao’s voice assistant. I’d like to confirm your morning delivery to 588 Culture West Road. Does that work for you?
C: I’m not home in the morning.
A: Then do you have another address that you’d like to use?

Within 30 seconds, the agent has smoothly handled three common, and tricky, conversational ingredients: interruption, nonlinear conversation, and implicit intent. Interruption is self-explanatory: the agent can respond to the customer’s interruption and continue relaying relevant information without starting over or skipping a beat.

The nonlinear conversation occurs when the customer asks, “Who are you?” This requires the agent to register that the customer is not answering the preceding question but rather starting a new line of inquiry. In response, the agent reintroduces itself before returning to the original question.

The implicit intent occurs when the customer responds, “I’m not home in the morning.” He never explicitly says what he actually means—that home delivery won’t work—but the agent is able to read between the lines and follow up sensibly.
These elements may be boringly commonplace in human conversations, but machines often struggle to handle them. That Alibaba’s voice assistant can do so suggests it’s more sophisticated than Google Duplex, judging from similar sample calls demoed by Google. It’s worth noting, however, that Alibaba’s demo call is designed for onstage presentation; the experience could differ in reality.
Currently, the agent is used only to coordinate package deliveries, but Jin said it could be expanded to handle other topics. He wouldn’t fully reveal how the assistant was trained. But he alluded to using the massive number of customer recordings at the company’s disposal, in addition to other resources. On a typical day the company averages 50,000 customer service calls, according to the presentation slides—a number that quintuples for Singles’ Day (November 11), its highest revenue-generating holiday of the year.
Alibaba is also developing digital assistants for other aspects of its business, including a food-ordering agent that can take your order in noisy restaurants and stores; a humanlike virtual avatar that can field questions about Alibaba products; and a price-haggling chatbot that is already used by 20% of sellers on Alibaba’s resale platform Xianyu.
At their core, each of these assistants is powered by the speech-recognition and natural-language-processing engine called AliMe, developed by the company’s Machine Intelligence and Technology Lab. They are then packaged and adapted to different parts of the business.
Alibaba’s biggest advantage in this field is the overwhelming wealth of data it has to train its AI. The assistants learn and improve faster because of the amount of practice they get in handling all kinds of situations. A huge business incentive to deploy these technologies quickly also helps. In addition to handling a high volume of customer support calls, Alibaba delivers one billion packages per day. Offloading certain tasks to AI helps alleviate the burden on humans and keep the business running smoothly.

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Face Detection V/S Facial Recognition. Check it out !! || techtalksgroup ||



What is Face Detection?

The definition of face detection refers to computer technology that is able to identify the presence of people’s faces within digital images. In order to work, face detection applications use machine learning and formulas known as algorithms to detecting human faces within larger images. These larger images might contain numerous objects that aren’t faces such as landscapes, buildings and other parts of humans (e.g. legs, shoulders and arms).

Face detection is a broader term than face recognition. Face detection just means that a system is able to identify that there is a human face present in an image or video. Face detection has several applications, only one of which is facial recognition. Face detection can also be used to auto focus cameras. And it can be used to count how many people have entered a particular area. It can even be used for marketing purposes. For example, advertisements can be displayed the moment a face is recognized.


Face recognition can confirm identity. It is therefore used to control access to sensitive areas.

How Face Detection Works

While the process is somewhat complex, face detection algorithms often begin by searching for human eyes. Eyes constitute what is known as a valley region and are one of the easiest features to detect. Once eyes are detected, the algorithm might then attempt to detect facial regions including eyebrows, the mouth, nose, nostrils and the iris. Once the algorithm surmises that it has detected a facial region, it can then apply additional tests to validate whether it has, in fact, detected a face.

Face Detection vs. Face Recognition

One of the most important applications of face detection, however, is facial recognition. Face recognition describes a biometric technology that goes way beyond recognizing when a human face is present. It actually attempts to establish whose face it is. The process works using a computer application that captures a digital image of an individual’s face (sometimes taken from a video frame) and compares it to images in a database of stored records. While facial recognition isn’t 100% accurate, it can very accurately determine when there is a strong chance that an person’s face matches someone in the database.

There are lots of applications of face recognition. Face recognition is already being used to unlock phones and specific applications. Face recognition is also used for biometric surveillance. Banks, retail stores, stadiums, airports and other facilities use facial recognition to reduce crime and prevent violence.

So in short, while all facial recognition systems use face detection, not all face detection systems have a facial recognition component.

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Saturday, 24 November 2018

What are Chatbots and how does a chatbots work..?? || techtalksgroup ||


A chatbot is an artificial intelligence (AI) software that can simulate a conversation (or a chat) with a user in natural language through messaging applications, websites, mobile apps or through the telephone.

 A chatbot is often described as one of the most advanced and promising expressions of interaction between humans and machines. However, from a technological point of view, a chatbot only represents the natural evolution of a Question Answering system leveraging Natural Language Processing (NLP).



The ability to identify the user’s intent and extract data and relevant entities contained in the user’s request is the first condition and the most relevant step at the core of a chatbot: If you are not able to correctly understand the user’s request, you won’t be able to provide the correct answer.
Returning the response: once the user’s intent has been identified, the chatbot must provide the most appropriate response for the user’s request. The answer may be:

• a generic and predefined text
• a text retrieved from a knowledge base that contains different answers
• a contextualized piece of information based on data the user has provided
• data stored in enterprise systems
• the result of an action that the chatbot performed by interacting with one or more backend application
• a disambiguating question that helps the chatbot to correctly understand the user’s request

Why chatbots are important

Chatbot applications streamline interactions between people and services, enhancing customer experience. At the same time, they offer companies new opportunities to improve the customers engagement process and operational efficiency by reducing the typical cost of customer service.

To be successful, a chatbot solution should be able to effectively perform both of these tasks. Human support plays a key role here: Regardless of the kind of approach and the platform, human intervention is crucial in configuring, training and optimizing the chatbot system.
Which chatbot application is right for you?
There are different approaches and tools that you can use to develop a chatbot. Depending on the use case you want to address, some chatbot technologies are more appropriate than others. In order to achieve the desired results, the combination of different AI forms such as natural language processing, machine learning and semantic understanding may be the best option.
In upcoming posts, we will give you an overview of the main chatbot applications so you can evaluate them based on your specific needs and desired goals.

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Wednesday, 7 November 2018

Top Programming Languages that can be used for implementing Image Recognition || techtalksgroup ||


Image recognition is one of the features that is deployed in most modern devices and programs. The feature has a wide range of applications, the most common one being in security systems. It enables devices to recognize the identity of a person or object just by its image. Face recognition is a product of image recognition.

Best Programming Language For Image Recognition

1. Matlab

                                            matlab programming language for image recognition
Matlab is an independent programming language that has its own framework and IDE which come in a more robust workspace. The programming language comes with a broad range of tools that you can use to handle more technical programming tasks with ease. Image recognition and face processing are some of the tasks that can be handled by Matlab.
Matlab offers an array of built-in tools for matrix calculation. It is imperative to note that image recognition and matrix calculation go hand in hand. Some of the tools that are available in Matlab can perform complex image processing tasks such as cropping, rotating, masking among others.
There is also a dedicated Matlab code for invoking and implementing face recognition feature. This code uses the AT&T database. For this reason, you should download the AT&T database before using this code. Most advanced face recognition applications are written in Matlab.

2.Python

                                            python programming languages for image recognition
Currently, Python is rated as the most popular programming language. Its simplicity and versatility are some of the reasons why many programmers prefer to use it. Despite being simple, Python is a language that you can depend on to perform complex tasks. It can be used to create image processing and recognition features.
The popularity of Python has made it be quite resourceful. It is packed with several libraries that are needed for several functionalities, among them-image recognition. One of the most powerful and efficient libraries is the Scikit-Learn Machine Learning library. Apart from image recognition, the libraries can be used for more intelligent functions such as face recognition and motion detection.

2. C/C++/C#

                                                             c++
You can never go wrong when it comes to the C family of programming languages. They are powerful and can do anything, including creating image processing and recognition functionalities. The C family of programming languages gives you two options for creating image processing feature. You can choose to code everything from scratch whereby you write the codes manually. The second option is to use the existing libraries that are specially designed for these programming languages. These libraries include OpenGLEmguCV, OpenCV, and many others. They have an intelligent image processing feature for image recognition.

4. Java

                                                      Java Programming Language
Like C and C++, we can never afford to underestimate the power of Java programming language. This language is powerful enough to perform complex functionalities. It can be used to create applications for image processing and image recognition.
As a standalone programming language, you can create an image processing functionality from scratch. The advantage of this method is you will have the full control of the functionality. Alternatively, there are powerful libraries that can be incorporated into Java for the purpose of creating the image recognition feature. OpenCV is just one of the libraries that is compatible with Java. You can choose whichever method that suits you.

The OpenCV Tool

                                                               opencv
Open Source Computer Vision is an advanced tool that is used for real-time processing. It is also a cross-platform tool hence can be integrated into any programming language for the purpose of executing image processing and recognition functions. It can be integrated with C, C++, Java, Python and Android programming languages.
OpenCV comes with patent-free algorithms that you can use without any legal restrictions. It can be used for commercial and academic purposes. It has a dedicated Face Recognizer class which you can use to experiment the capabilities of image recognition feature without any hassle. The class is accompanied by an information-rich documentation which will show you how to implement the image recognition feature. In overall, OpenCV is a go-to tool for image recognition regardless of the programming language that you are using.
There are several other programming languages that you can use for developing image recognition functionality. Before you start using any language, learn how to process matrix as it is the building block of image recognition programming.

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Tuesday, 30 October 2018

TOR Enabled Sim Card will keep your communication Anonymous

Although technology has overall made life easier, it has made things a lot less private. As a result, you need to be extra careful when you are browsing online, as it very difficult to maintain privacy out there. It is even possible that your ISP or VPN provider is maintaining a log of everything that you do online.



So, how do we protect our online privacy? Brass Horns Communications, a UK-based non-profit internet service provider that focuses on privacy and anti-surveillance services, has an answer for this. The company is currently beta-testing a SIM card that will automatically route your data through Tor, thereby securing online privacy and evading surveillance.

For those unaware, Tor (originally known as The Onion Router) is a free piece of software for enabling anonymous communication. Tor directs Internet traffic through a free, volunteer-operated network of computers around the world to hide a user’s location and usage from anyone conducting network surveillance or traffic analysis. While Tor protects a user’s privacy, it does not hide the fact that someone is using Tor. The most common method through which people access Tor is the Tor Browser Bundle on desktop, or with the Orbot app on Android.

According to Brass Horn’s Onion3G service site, it claims that the “The Onion3G design is a closed network between your 3G device/MiFi/modem and the Brass Horn Comms Tor bridges, this may make the collection of Internet Connection Records (and by extension other forms of bulk surveillance) less effective.”

It also claims that it’s a safer mobile provider because it only issues “private IP addresses to remote endpoints which if ‘leaked’ won’t identify you or Brass Horn Communications as your ISP.”

Brass Horn Onion3G SIM card only has 3G connectivity. In order to use this Tor-dedicated SIM card, it is necessary to install Orbot app on the device. Further, only apps that have a proxy feature, like Twitter, are compatible. Also, it is available only for Android users.

The Tor-SIM card will cost £2.00 per month for a prepaid account. Further, £0.025 will be charged for per Megabyte (MB) transferred over the network. Pre-payment can be topped up at any time using a credit card like Visa, Mastercard, or cryptocurrencies like Bitcoin, ZCash or Monero.

Currently, the service is offered in the UK only and is likely to be made available to the public in 2019. Those interested in joining the beta phase can find more information here.

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Thursday, 18 October 2018

Had you ever imagined of a Cell-Phone without a Battery. Check it Out..!! || techtalksgroup ||


Some years before the basic requirement of any person is simply Food, Cloths, and Shelter but today one more thing is added to this queue at that is Cell-phones . Cell-Phones had become the basic requirements of today user . No work is remained now a days that cannot be performed using a smartphones. Bu the biggest problem that comes with smartphone user is to charge the phone, but suppose a lifestyle where you have to just use the smartphone without getting worry about its battery.

Phone manufacturers are constantly striving to create new products that can run longer on a single battery charge but a team of engineers at the University of Washington (UW) has gone the extra mile: They built a cell phone that doesn't need a battery at all. When radio waves interact with an antenna, the waves induce electricity to flow through the antenna.


While radio waves carry energy and we're surrounded by transmitters generating these waves, this doesn't mean you could power your home by hooking all your electronics to antennas. That's because radio wave propagation follows the inverse-square law — the strength of a radio signal weakens by the square of the distance from the transmitter. It doesn't take long before you're too far from a transmitter to harvest enough electricity to do useful work.

Making a phone call requires that the device you're using has continuous power. "You can't say hello and wait for a minute for the phone to go to sleep and harvest enough power to keep transmitting," said paper co-author Bryce Kellogg, a UW electrical engineering doctoral student, in a press release. "That's been the biggest challenge — the amount of power you can actually gather from ambient radio or light is on the order of 1 or 10 microwatts. So real-time phone operations have been really hard to achieve without developing an entirely new approach to transmitting and receiving speech."

To get around that problem, the team designed a base station that transmits RF signals to the battery-free cell phone. With both the base station and the photodiodes, the phone can operate up to 50 feet or about 15 meters from the base station.

Making a call is simple. You just punch in the phone number you want to call and the circuit board sends this information via radio waves to the base station in a digital packet. The base station takes this data and makes a call on Skype to a cellular network. The station continues to remain in contact with the phone via radio waves, allowing the caller to hear the other side of the conversation. To speak, you just have to hold down a button to activate the microphone.

The simple design means the phone operates on just a few microwatts. Despite the low power approach, the result is pretty amazing.

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