Mensch und Computer 2007 in Weimar

At the moment, I’m attending Mensch und Computer 2007. The invited talk of this morning was very nice, altough it was given via Skype as the speaker, Adrian David Cheok fell ill and was not allowed to travel. The talk had also some funny parts including a wearable suit for a chicken equipped with vibration devices. The idea is that by interacting with a chicken puppet, the user can remotely stroke his pet chicken. The puppet is mounted on a XY plotter-like device that can then display the motions of the chicken in its cage.

Tomorrow, our workshop on nomadic and wearable user interfaces will take place and I hope that we will have interesting discussions.

Posted in Conferences, Gadgets, Research, Wearable Computing | Leave a comment

Arrested for library access

A while ago, on August 1st, scientist Andrej H. has been arrested. His subject is political science, his research topic is urbanization. According to his former Ph.D advisor, Andrej H. calls himself a marxist. The Public Attorney’s Office calls him a terrorist. In the warrant, this claim is based on rather interesting reasoning.

Aparently, Andrej H. has met with a person that has been recently arrested for arson on a military truck. No casualties, just lots of damage.
That person seems to be a member of what is called “militante gruppe” or “mg“, a group of pathetic left-wing hobby “terrorists” that cause more (brain-)damage by the intellectual blabla that they print on pamphlets than the arson attacks and threat letters they send around.

And since some time, there is a chain of arson attacks on premium vehicles in Berlin. Understandably, the political pressure to stop these arson attacks is quite high at the moment, as burned-out luxury cars in a touristic neighborhood don’t look so nice on postcards and as the owners and their insurance companies aren’t very happy about this either.
The car burnings happen often in neighborhoods such as Prenzlauer Berg and Friedrichshain that were formerly cheap and occupied by an urban Bohéme after the Berlin wall came down and are now being nicely renovated and sold piece-by-piece to wealthy individuals that want to breathe the air of the authentic. And can afford to buy appartments. And luxury cars.

This process is called Gentrification in the social science research of Andrej H. And here, as Bill says: “the plot thickens”…

The Public Attorney’s Office reasons as follows:

  • Andrej H. has met a known member of “mg”. Thus they are both members of “mg”.
  • Andrej H.’s research is on urbanization. In one of his papers, dated from 1998, he uses the same wording (including the suspicious Gentrification) as are used in the pamphlets of “mg”. Thus he must be a member.
  • As a research scientist, he has access to a library where he can do research for “mg”.
  • As a research scientist, he has the intellectual and factual abilities to write the complicated pamphlets of “mg”.

This scared me a bit. How do I do in this respect?

  • As a research scientist, I have access to a library.
  • As a research scientist, I should have some intellectual abilities.
  • Most of my publications are online. I hope no pamphleteer reads those and uses the word “wearable computing” or “RFID”. Or “Gentrification” as in this blog post…
  • OK, I’m safe: I haven’t met anyone of the “mg”. And now I’m writing a blog post on somebody that is a member? Oops!

To avoid misunderstandings here: I am not promoting any left-wing propaganda, especially none of the brain-confusing leftish bla-bla that the “mg” is so famous for. If Andrej H. would be a potential right-wing or islamic terrorist, my reasons would still apply.

What I don’t like in this procedure is that one can base a german arrest warrant on facts that apply to millions of researchers on the planet. Yes, I can go to a library and I am not completely stupid. I may meet and talk to all kinds of people, I hear their arguments and I claim that I can think for myself. Does that make me a terror suspect? I don’t think so.

Similar “reasoning” could be applied with the recently passed new law (StGB 303b) on “hacking“, which threatens all computer security researchers that write software that could be used for criminal purposes. Mixed with the terrorist paragraph 129a StGB that has also been used in the case of Andrej H., this threatens all members of organizations that work on IT security. Maybe I should cancel my membership in IEEE and GI

Currently, I’m reading a book called “What terrorists want” by Louise Richardson. (German version) Richardson claims that the three personal reasons for terrorists are Revenge, Fame and Response. The case of Andrej H. and the group of “mg” members could in a twisted way be a reason for “Revenge” against a state that seems to be using very weak reasoning for prosecuting intellectuals. With the actions of the Public Attorney’s Office, the “Fame” point clearly goes to “mg” and so does the “Response” point. This blog post is obviously and unfortunately a part of all this.

On August 24th, the warrant of Andrej H. will be reviewed. If there’s real and factual evidence against him, keep him locked up and put him to trial. If there isn’t anything but him having access to a library, let him go.

Posted in Politics, Research | 2 Comments

Next Train to Bremen Central

Bahnhof Burg

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How to install a SSL certificate on a GSM Phone

For some time now, I had a problem using the IMAP e-mail client with my own mailhost. When using unencrypted POP3 or IMAP4, everything was fine, but when I tried to use SSL to protect my password, the phone refused to establish an SSL connection. The certificate I use is self-signed. As there is no trusted CA certificate installed in my phone that certified the authenticity of the SSL key my imapd uses, it correctly refuses the connection. But unlike desktop browsers or mail clients, it did not ask me if I wanted to trust the certificate presented but just disconnected. 🙁

So I found a solution to this on the Zimbra wiki: The way to go is to create a certificate file on a webserver and make the phone download it using its internal web-browser. The phone installs this certificate together with the root CA certificates and thus trusts the imapd when it presents a key signed by this certificate.

I tried this with my SonyEricsson K750i and it worked immediately.

Step by Step intstructions:

  • Extract the certificate from the key file of imapd:
    openssl x509 -outform der -in imapd.pem -out imapd.der
  • Copy the output file into a directory accessible by your httpd. For simplicity, I used the server root.
  • Configure your (non-ssl) httpd to provide the correct mime type for “.der”-Files:
    Add “application/x-x509-ca-cert der” to mime.types
  • open the browser of your phone, select “type URL” and enter:
    http://www.your.server.org/imapd.der
  • The phone will respond with some poorly debugged dialogs and finally end with something like “Do you want to accept the new certificate?”, select “YES”.
  • Check the internet settings of your phone if the certificate is present and active. For my SonyEricsson K750i, it appeared in Internet Settings/Security/Root Certificates.

And since, the IMAP4 over SSL works as expected.

Posted in Gadgets, Technology | 1 Comment

Ingrid Rügge’s Ph.D defense

This week, Ingrid Rügge defended her Ph.D entitled “Einsatzpotenziale, Nutzungsprobleme und  Lösungsansätze mobil tragbarer Informations- und
Kommunikationstechnologien”. Being a member of her Thesis Committee, I was very impressed with the broadness of her work and she gave one of the best defense talks I ever heard.
Congratulations!

(Pictures of the reception afterwards will follow…)

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Nanotechnology at the local grocery store

Nanotech at Marktkauf:

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IUB Robotics going down…

underwater. The name of their robot is really cool.
And it’s yet another robot with a RoboCube inside.

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Jacobs Foundation gives €200M grant to IUB

The Jacobs foundation will fund my previous employer, the International University Bremen with a €200M grant over the next years. IUB will change its name to Jacobs University Bremen. This makes it highly likely that IUB (now JUB) will be around for the long run. IUB will receive the money in annual payments of €15M that will cover a significant part their annual budget.
Congratulations!

H.

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Expo2000 Robots revived

A couple of months ago, I received one of the Robots of the Expo2000 project by BBM and the ZKM. With the help of Heinz Huber from Fraunhofer IML, we were able to revive it. Andreas Kemnade installed an updated linux kernel and I wrote a simple motor tester for it. We’re now building a player/stage driver for the robot and we will integrate a hokuyo URG and use it for human robot interaction experiments.

Nice Pictures will follow…

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Mobile Phone Robocup Rescue Software released

Nils released our MobileResQ software today. It consists of a java-based mobile phone client (should work on all MIDP2.0 / CLDC1.0 phones with Bluetooth and JSR82 Java bluetooth interface) and a java-based server that can run on any java-enabled internet host. The server collects data from the client and creates .gpx files that can be viewed with Google Earth or used as input to the robocup rescue simulator (see our Paper on the ATDM Workshop). Please download and use it. A sourceforge site will be up in the future…

Posted in Gadgets, Research, Technology, Urban Search and Rescue | Leave a comment