The Future for Smartguns

Smart phones are a way of life, but have you heard about smartguns? Here in the USA a debate is raging about the introduction of this type of technology, while in Germany it has already passed into law. But firstly, what is a smartgun and what type of technology does it involve?

The idea is that only the rightful owner of the weapon can fire it. There are different mechanisms on the market for ensuring this and I would like to introduce a few here.

Trigger Smart is an Irish company. They have a system that uses radio waves. The weapon has a receiver placed in the handle and the owner is given a tiny HF transponder (something similar to the device found in your car keys) that can be worn in a ring or a bracelet. The gun will only fire when the correct ID number is received from the ring or bracelet.

The manufacturers argue that this makes the gun safer, as it cannot be fired by the kids while you are out or by an intruder or attacker that takes the gun off you in a fight. In the event of a shooting the police can also jam the frequencies and make the gun useless. In some cases a chip can even be placed under the owner’s skin.

Way back in 1975 a magnetic version of the same idea was invented, and is generally believed to work very reliably, although it is not widely used. Another system uses biometrics, identifying the owner through their grip and characteristics of their hands, but even the developers argue that the system is only 90% effective.

One problem with biometrics is that the gun needs time to process all of this input, but a US Austrian company called Biomac have a system that uses optical sensors to measure data from below the skin. They hope to design a system that will be accurate and work within half a second of picking up the gun.

Smartguns

Possible smartgun biometrics?

The gun lobby argue however that these security systems make the gun potentially more dangerous as any intruder may be able to block the radio systems, the batteries or other electronic parts may fail, parents who like to shoot with their children would have to buy them a dedicated weapon, and what if the owner is not in the house and another family member needs to defend themselves using the gun?

Even pro gun control groups are not convinced as it might even make gun ownership seem safer, leading to more sales, so it are very difficult to find in the USA.

The extent to which the gun lobby influences politics here is difficult to appreciate from outside the country. There is an attempt at the moment to make it illegal to buy a gun for someone who has been declined permission to own one. At the moment if I buy a beer for someone under 21 or give watered down wine to my son (as we did in Italy) I risk going to prison, but if I buy a gun for my friend who has been declined a license on psychological grounds I do not. There is no guarantee that it will pass though, as any form of gun control is fought tooth and nail and with the advantage of high financial backing.

It is not a completely dark picture though. The state of New Jersey actually passed a law to say that smartgun technology must be fitted to new weapons as soon as it has been developed enough and shown to be reliable. In Germany a law was passed in 2009 that goes even further, in that the technology will have to be fitted to all weapons old and new once it is available and proven. Unfortunately proven etc might take many years.

What none of the above really does is to address one of the biggest problems of gun ownership here in the USA, suicide. There is a massive increase in suicide rates in states where gun ownership is high. Suicide rates using other means remain constant, but a gun is a no return tool. Extremely efficient and easy to manage, success is almost guaranteed, and none of the technology that is currently under development can address this problem.

This Harvard University link explains the relationship, but it is enough to say that suicide rates are double in states where gun ownership is high, although non firearm suicide rates are about the same. To give an idea there were almost 20 000 firearm suicides in 2009 out of 36 000 total deaths, while there were only 11 000 murders.

The debate will rage for many years to come, but what part will smartgun technology play?

Touchscreen Problems (Zombie Finger)

iPad zombie finger - Touchscreen ProblemsOver the last couple of weeks I have flown from the USA to Britain, then to Italy, and back finally to the USA. I flew on some lovely new Airbus aircraft, but had a constantly recurring problem with the on-board entertainment systems.

The problem is that in the seat above me there is a fantastic touchscreen entertainments system, but my fingers do not work. My son who was sitting next to me has good fingers, he touches the volume section and can turn the sound up or down, but I cannot because the slider does not seem to recognize my body.

So it must be my screen I think, my son leans over and it works perfectly well for him. We swap places, now mine works for him but I still cannot change the volume, this time on a different machine.

It must be me I conclude, but why? Long ago I gave up using anything touchy for this reason. I try licking my hands, warming them up, cleaning the screen but I do not make any progress. So I started looking around the web for some answers to find that I am not the only one, hurrah. There is even a recognized name for the problem in some fields, Zombie Finger!

Touch screens operate in many different ways. At Walker Mobile you can download a free PDF that explains how the different technologies work, but the vast majority of application that we know use one of two approaches. They can be described as Resistive Touch and Projective Capacitance.

Resistive touch is old school analogue. Two surfaces are together, typically one of glass with a thin film over it. You push down on the film and it makes a circuit using a grid of electrical conductors. The system is cheap but being mechanical liable to damage and wear, and it is thick.

Projective Capacitance has no moving parts however, and some of its advantages mean that it is rapidly taking over the market. It is a system that works on capacitance, which is the thing that gives you a shock when you walk over a synthetic carpet and then touch the brass door handle in the hotel that you are staying in.

iPhone touch screen technology

How iPhone touch screens work.

Again there are two layers, both charged but to a different extent. When you touch the screen some of the charge is released into your finger, and this tiny change can be measured. And here lies a variable, because the nail will not carry a charge, gloves stop the action and so I wonder if even the state of the skin at the end of the fingers might effect usability. Do I type too much? No charge transfer means no volume.

For a fuller explanation of these 2 competing systems see this article, it is short but extremely informative. I would just like to know if anyone else has issues with touch screens, and if so if they have been able to address the issue in some way. As technology advances this interface is becoming the norm, and we wouldn’t want to leave people with particular skin types behind now, would we?

Robotic Surgical Techniques

This weekend I had a very interesting experience. I tried out a few million dollar’s worth of robotic surgery equipment.

The Davinci Robotic Surgery Machine

The da Vinci Robotic Surgery Machine

The system I tried out was designed and built by da Vinci Surgery, and is in use at the Brigham and Women’s hospital here in Massachusetts. The hospital states that over 600 operations have been carried out since 2007 when the technology was introduced without need for further more invasive interventions or serious damage to any patient.

Imagine that you sit in front of a 3 dimensional image and control robotic arms with your own arm and finger movement. The arms are about as thick as pencils, and as there are 4 arms on each robot two surgeons can work together.

The hand controls feature finger grips

Hand controls

The great advantage is that instead of having to make a large cut so that the doctors can get their hands in, the robot makes 5 tiny cuts for the arms to pass through. There is a camera so the surgeons can see inside and they can proceed at a safe distance.

Healing time is cut down, less blood loss, less possibility of infection, less post operative pain and very little scarring, there are many advantages to this type of approach. The machinery is very easy to use. My 7 year old son could take tiny elastic bands off a test bed and place them round objects about the size of the end of my little finger, at a distance of 3 metres!

One issue is however that some people are dubious about a surgeon operating using this type of machinery, they might feel that a hand is better then a robotic arm. Having used one (not on a patient I grant you) I personally would not have any problem accepting a procedure of this type.

Robotic surgery makes us think of computerized machinery with Kraftwerk type movement and voices, but this machinery is nothing of the sort. It handles like an extension of your own body, the movement is very real and precise and in some ways the robotic arm is easier to manipulate than a human counterpart. It can turn 360 degrees upon itself, has full rotation capability and the magnification makes the process seem easier. I was shocked when I saw how small the area was that we were working on.

A training program was also on display, a series of tests to improve performance and present each operator with a score. A skilled operator can tie a knot in a piece of string or link tiny elastic bands together that would be extremely tricky using human fingers.

Below I have a series of photos and here is a link to a video showing an actual procedure so stop reading here and skip straight to the comments section if you don’t want to see them.

A Dummy Up

A dummy shows entrance

Robotic Surgery

Robotic surgery in action