Gadgets Category Archive

High Technology Sign Language Gloves

3 Replies Jonny Hankins

The winners have just been announced of the Microsoft Imagine Cup and they have created a very interesting product, worthy of a look I feel and also of the $25000 prize money. The Quad Squad team is a group of students based in Ukraine, and they have designed a pair of gloves that are able to convert sign language into sounded speech.

The gloves are fitted with sensors that can read letters as displayed in sign language. Software then interprets the signs and produces the spoken sound through mobile phone technology.

A pair of sign language conversion gloves.

The designers hope that their product will enable communication between someone speaking using sign language and someone who cannot read sign. Incidentally they have small solar panels fitted so they can recharge themselves while in use.

Comments on the Gizmag blog point to limitations, the gloves can only presently recognize letters and not symbols for words, but all agree that the product is definitely a step in the right direction.

If your sign language is not up to scratch you might like to try a pair of Accelagloves. These gloves use a mixture of sensors, software and a video camera attached to your computer to teach the signing of letters. They cost $300 (including software) and are already available from the Institute for Disabilities Research and Training who worked on their development. The Endgadget website offers a demonstration and the author’s verdict on their efficiency in video format.

The gloves are not only designed as a learning tool however, but also as an input for your computer as communication between gloves and computer is two way. Not only do they teach the symbols but they allow the user to input data through sign language, another important use in cases where visual or audio contact is not possible or the input device cannot be easily held (in emergency situations for example).

If your signing is already good you might like to try a pair of Glow Gloves. A simple idea that enables sign language in the dark, they do exactly what it says on the box.

I worked in a school in Italy where sign was taught as a curriculum subject, and now my youngest son is learning it at pre-school, but from my own point of view it remains an underused resource. Maybe this technology could help to spread its use to a larger group of people.

How the USB revolutionised computing

6 Replies Christopher Roberts

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The Universal Serial Bus, or as it is now commonly referred to as the USB, is a port designed to provide power supply or share data between electronic devices.

Ask someone to think about a USB, most people will naturally assume you are talking about a memory stick, which in essence is a super small, lightweight portable hard disk. However don’t confuse a USB port (the holding device) with a USB flash drive (a memory stick).

The USB (both port and flash drive) is something most of us take for granted in modern times, so I thought in this post it would be interesting to look at some of the uses for USBs, and how the USB has evolved over time.

USB 1.0

Design prototyping for the USB began when computing was still in its infancy, way back 18 years ago in 1994. At the time the port was being developed by the big players in the computing industry – Microsoft, Compaq, Intel, IBM, etc. These companies realised that there was (at the time) no easy medium which allowed communication through computers. For the computer to evolve, the companies realised that this would be an integral part of the system, as if you cannot share data, options are limited. Do remember this was happening in times before the internet was the global phenomenon it is today.

The first USB was produced in 1995 by Intel. Computers of the time started to come fitted with one or two USB 1.0 ports – although looking back, relatively few PCs were ever released with USB 1.0 ports. Nowadays, USB ports are in most cases a necessity for keyboard and mouse input devices.

The USB 1.0 was a revolutionary product, however looking back, its functionality was limited. Its maximum data transfer speed was 12 megabits per second. Relatively slow. That said, back when it was first introduced, a computers internal hard drive was typically only sized around 256/1024 mb (1/4 of a gigabyte to one gigabyte).

USB 2.0

In late 2000, the USB flash drive was released, enabling users to store more data than ever before, by storing things external to their computer. It would be an understatement to say that the USB flash drive was a step up from the floppy disk – it was more of a leap up! Initially, most USBs were typically 8 megabytes in size, meaning that they could hold more than five times what a floppy disk could.

Earlier in the year, the USB 2.0 was released, meaning that data transfer could happen 40 times faster, at 480 megabits per second. Initially some flash drives were designed for 1.0, however soon they were all being designed for the new 2.0 port, due to the increased possibilities.

USB 3.0

In 2008, the currently less well known USB 3.0 was released, which is more than ten times faster than its 2.0 brother.

USB flash drives have also improved over the years, and it is now possible to get a USB flash drive that is 256 gigabytes – one quarter of a terabyte. These disks are bigger than most computer hard drives were just a few years ago, showing the extent of the upgrades this technology has undergone.

A 256 gigabyte memory stick would though be useless with a USB 1.0 port as filling it would take almost 2 days (1.98 days) due to the speed of the data transfer. Even with a USB 2.0 port, the data transfer would take almost 72 minutes – more than an hour. Modern USB 3.0 ports could have the job done in less than 7 minutes. That really shows the true scale or achievement and advancement made in the USB industry.

Modern Uses

The USB is a crucial component of the modern PC, and is also very important for other devices. It is now possible to power many smartphones and multimedia devices via USB, either through a plug or your computer.

Some people use USB sticks to carry around a portable operating system with them, as it is perfectly possible to load Windows 7 onto a 16 gb memory stick and carry it around with you.

A USB penThe USB itself is a very flexible (not literally, the board would probably snap were you to bend it) device, with a lot of room for aesthetic variation. You can now get a range of Promotional USB Sticks, which many organisations often utilise, choosing to offer branded USBs as promotional gifts. This is all thanks to the readily available technology and cheap price of the components involved.

USBs now come shaped as credit cards, keys, pens, robots, people and even wine bottles!

A USB shaped into a bottelDo you have any funky USB flash drives at home? How about USB ports, have you counted how many your PC has? Comments and feedback below as always 🙂

What are the risks of getting infected by malicious software?

11 Replies Alan

Have you ever thought of what is going to happen when you are infected by a computer malware? About a decade ago, computer virus aims were to replicate themselves and destroying key operating system functions. If you got a computer malware infection at that time, most probably your operating system will be corrupted by the malware and you will need to format your hard disk to solve your problem.

Today, malicious software behaves a little different. We have more than 10 types of computer security threats such as virus, trojan, worms, spyware and many more. Each type of malware has their own speciality and here are top 3 risks of getting infected by a computer malware.

1. Having your login credentials stolen

It is very popular today that a keylogger/keystroke logging is used to log a victim’s login credentials. Once the keylogger has a set of your username and password, they can login into the account and do almost everything unless your account is protected by a two factor authentication.

2. Losing hard disk space

Hard disk space today can be very cheap but we should not waste it on storing malicious software. Malware such as worms will replicate in your operating system and take up your hard disk space. You will not feel the burden at the beginning but as the process gets longer, you will start to feel the pain of having insufficient disk space.

3. Spending money on unnecessary stuff

There is also a type of malware where they scare you off by telling you that your computer has hundreds of infections which you actually don’t have. Upon scaring you, they urge you to purchase a bogus antivirus which claims that can clean all the mentioned infections. All in all, you end up actually paying for nothing.

4. Being part of a minion for DDoS attack

Have you ever thought of how DDoS can bring thousands to millions of traffic to a server? It is actually all the computers which are infected with some sort of trojan that explains how the attacker can have such massive amount of traffic. By getting a malware infection, you are at risk of becoming part of this big project which you do not want to be.

5. Losing your privacy

Another form of malware which is known as spyware is built to spy your daily activities. By knowing your daily activities, the attacker will be able to understand you better before attacking you. For instance, if you regularly surf to adult sites, the attacker will probably start off with some fake adult material to lure you into their trap.

Looking at someones internet usageBack to you now, are you able to take all the risks mentioned? If you are not, be sure you have a good habit when it comes to internet and computer security and always remember that having an antivirus and firewall is not sufficient for a good security.