Wall-Sized Printed Adverts with Integrated Screen

At Zurich Airport Orange and Nokia are running a large printed advert. At a first glance it looks just as a printed large scale poster. The TV screen in one poster and the projected writing on top of another poster are seamlessly integrated. The media design of the overall installation is appealing.

The active screen (could be a 50 inch plasma TV) is the screen of the mobile phone and shows the navigation application. In contrast to most other installations, where screens and printed posters are used, this appears right and it catches people’s attention.

There is work from Scott Klemmer’s group at Stanford that looks the relationship between the printed displays and projection/displays for various applications. The Gigaprints project was shown as a video at Ubicomp 2006.

Large scale sensor network connected to public displays

The airport Köln-Bonn (CGN) has all the parking spaces monitored with a simple sensor (detects if there is a car or not) and provides displays at the entrance showing the number of open spaces and has active signage in the parking garage leading to the free spaces – additionally it is visualized above each space – probably more a maintenance functions to see if the sensor works.

(looking at the pictures I have probably parked on women-only parking spots…)

How will wasting energy be judged in the future?

Back in Bonn after my holidays I had to catch up on a few things. When I left the B-IT after midnight I was stunned by the sight of the post tower (http://de.wikipedia.org/wiki/Post_Tower) – as it is all lit up. Another example of a interesting and large scale public display.

However I wonder if behavior where energy is used to quite some extend (or wasted) will be judged in 20 years similar to the way we see nowadays the pollution of rivers and air that was common in the first half of the last century.

Public Displays and Responsibility for Content

Antonio Krüger at the University of Münster is running an infrastructure of public displays that show various kinds of information. Using a web editor a select set of people (mainly staff at the department) can input and manage the information chunks that are presented.

In our discussion it became obvious that running such public displays comes with a lot of responsibilities and that people are very quick at complaining about content (may it be censorship or offending content). This leads then to more or less closed and controlled system – but I wonder if we are not overcautious or the expectations around us are too high.

I took a picture of one door in a restroom in the University. It is converted in a public display by people (anonymously) using a pen – and its content is neither politically correct nor suitable for children. However this is rightly blamed on the people who do the damage and not on the administration or designer that decided that the doors are white and made of a material one can write on.

On the Mobile Phone While Working?


It seems that recently I come across many people that speak on the phone while they do their work. In Toronto on the bus to the airport the driver spoke on the phone (telling someone how to find and edit a file in Windows) while driving. Here in Bonn I saw it in shops and on the ferry – it felt really awkward to interrupt people in their phone conversation just to pay my ticket or bread.

At the moment most people speak while holding a handset – but given they use BT-headsets one could image new working practice 😉 e.g. driving a bus and doing a call center job on the side. I would expect there will be some regulation soon…

Public Displays – Making Life More Predictable

On my way home from Toronto it was surprising how many public displays I saw that provided me with ”information about the future”, e.g. telling me when I will be out of time to cross the road, when the next train is due or when my luggage will arrive. These kinds of predictions or contexts are simple to gather and easy to present and best of all: the human is in control and can act on the information. Overall it is reassuring even if the context information is wrong (this is another story about my luggage ;-).

Pervasive Computing and Ethics

Together with Boriana Koleva I organized the doctoral colloquium at Pervasive 2007 in Toronto. We had 9 students presenting and discussing their PhD work with us.

One central observation was that we come to a point where we have to make more and more ethical decisions. Many things that are technical feasible and harmless within the lab may have sincere implications in the real world. If technologies for tracking, tracing and mining (e.g. social network analysis, location based services, context-aware systems) are deployed beyond the lab the question of choice becomes a real issue – are users aware of it and can they opt-out?

In the area of context-awareness technology has moved on since I started my PhD on the topic nearly 10 years ago – but amazingly scenarios did change little. Automatically detecting a meeting is still on the students slides. The more I learn and understand about context-awareness the more it becomes apparent that this apparently simple use case is amazingly hard!

Public Displays in Restaurant Bathroom

After the Ubicomp PC meeting we went to a nice restaurant in Toronto for dinner. In the bathroom they had mounted TFT-screens above the urinals showing a TV program or adverts (was hard to tell in the short time I was there). It found it was quite distracting. The displays reminded me of a poster I saw at CHI 2003: You’re In Control: A Urinary User Interface by Maynes-Aminzade and Raffle (http://doi.acm.org/10.1145/765891.766108). Given the distraction experienced, I wonder if a design where visualization and control is spatially separated and hence control is indirect make sense for such applications.

In summer during the soccer world championship in Germany I saw a low-tech version of a bathroom game: a ball on a string in a goal. Here control and visualization is in the same place and it felt more natural to use. (sorry for the low quality pics – they are done with my old phone).

Observation at FRA, Terminal 1 B

The number of power plugs available to the public seems to be very close to zero at Frankfurt airport. If a persons sits somewhere on the floor in an odd corner it is likely that there is energy for the laptop or phone.

The number of Bluetooth IDs visible when scanning is amazing. It seems that many people have it switched on continuously now (quite different from 2 years ago). The friendly name used by people seems fairly boring, mainly the preset model name of the phone, combination of first name an phone model, initials, full name and the occasional “hi there”. These observations are quite encouraging for one of our projects.

Looking at the scans I wonder if it is likely that people who travel together have similar phones (e.g. same manufacturer).

Audio Tapes Soon be History, Printed Paper Next?

News papers in the UK have reported that sales for audio tapes at Currys were down from 83 million in 1989 to 0.1 million in 2006 and hence Currys is going to stop stocking them. We recently discussed how expensive talking toys (in particular dolls) were just twenty years ago. The were based on mini records or endless tapes. By now storage chips are so cheap that a good birthday card can sing you happy birthday.

How long will it take before electronic paper will replace printed paper in the large? At least it is close enough to seriously think about applications and business models that arise.