Technology Category Archive

Second Hand Technology Finds

9 Replies Jonny Hankins

If you walk round Cambridge in Massachusetts in June, you find the streets filled with discarded belongings. The students are leaving Harvard, MIT, Boston University and all the others institutions and as they leave they abandon the things they cannot take with them by the side of the road. Many stacks of things have a little note or post it attached saying ‘take me’ or ‘free, working’, and it is very much part of the culture to take things.

On my final few days in Cambridge last week I walked the streets with my kids from one park to another, and I collected some interesting things, including some very interesting and expensive pieces of second hand technology.

A common sight on Cambridge Streets

I collected a pair of M Audio AV40 studio speakers, fully functioning and beautiful to listen to. List price $229.99. A few scratches on the top of one but obviously only had light domestic use. Into the back of the bike trailer they went and onward on our hunt.

Further down the road I picked up a large 27 inch LCD computer screen, again lightly used and well looked after. At least $200 if you buy it new, as its previous owner had done probably 9 months before.

I was fortunate enough to pass a young student as she emptied her office into a box on the street, so I collected 6 Moleskin divided folders ($26 each), 200 blank DVD’s and cases, about 60 blank CD’s and 2 nice moleskin notebooks. Into the trailer, the kids can walk.

Last year I saw bags of cables, modems and power units, and as I moved from Europe I took what I needed.

On this trip I also saw a 32inch flat screen TV but I couldn’t carry it, and a standard size LCD TV too but with no remote control. I left that where it was too and will explain why.

The thing about TV’s and monitors is that you have to pay $25 for the city services to pick them up, so many are abandoned. If you pick one up and it doesn’t work you have to pay to dispose of it, or leave it outside again for someone else to do the same. Either way not a great result. I also saw at least 10 old cathode TV’s, only one with the label to demonstrate that it had been paid for.

This started me thinking about the effect that a moving student population must have on the technology market and by extension the development of new products. Practically every student has a laptop, smart-phone, TV and high speed internet at home and these things are all paid for when they move to their university of choice. Producers must see a massive peak in September, and an associated rise in profits.

So this leads to the question of what happens to all of this stuff when they move on. In many cases they take it, but some cannot be transported and is left, either by the side of the road, dumped or left in the house.

As we all know the dumping of technology is extremely damaging, recycling a must but also ethically dubious, so how about something like the Cambridge model?

The model is also used here for cans and bottles. If you buy a beer in a bottle or can, the can or bottle has a value. If you take it back to the shop they recycle it and give you 10c back. I have seen the same model with plastic bottles in Scandinavia. The result of this scheme is that a business has grown up around collecting empty bottles etc from the bins, students in the case of Scandinavia and homeless people here.

Well, for however much you might not like the idea of going through somebody’s recycling bin for returnables, it looks like an extremely efficient form of recycling to me, and revenue for those people that really need it. And although I don’t do bottles you should see my well stocked office and hear my stereo at home!

Waste less!

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.

Injections Without Needles

9 Replies Jonny Hankins

If there is one thing I don’t like it is getting an injection. I have never had a flu shot (but never had the Flu) and part of the reason is the needle effect.

This may all be coming to an end though as scientists here at MIT have devised a way to inject medicine without a needle. See this article for a description.

Needle free injection

The new MIT developed needle-less system

This is not the first time that such a development has been publicized, but a technological and practical leap forward has been made. The MIT system is new in that it can deliver medicine at different depths. This means that medicines can now be inserted into muscle or fatty tissue at will and with ease.

The system uses magnets to achieve delivery, and this is the breakthrough that makes the system so interesting. Needle-less systems have been available for some years now, but they tend to rely on compressed air and are not flexible in terms of pressure. They medicine enters the body but the depth is not variable.

The MIT device works electrically and the pressure is absolutely flexible, allowing the operator to change the pressure of entry but then also lower it to enable distribution to the surrounding tissue. In other words lower pressure can be used to pass through the skin of a child, a process that does not require the same force as passing through an adult’s skin. The pressure can then be lowered to enable the distribution of the medicine to the surrounding cells once already in the body.

This breakthrough means that medication can be passed through other parts of the body too, for example through the eye tissue and directly into the retina or through the ear drum.

As you can see the importance is not really in my dislike of needles but in the loss of the needle.

Needle injuries are common for health workers, and with this system they are removed from the equation once and for all. No more accidental cross infections!

There are also obvious advantages for people that have to inject themselves daily for example in the case of diabetes.

Several major drugs companies have expressed an interest in developing and marketing the product so it looks like the days of the needle might be numbered.

I don’t know if it still hurts a bit though.