Privacy on Jean-Etienne's blog

2013 in review: how to use your users' collected data

Sun, 19 Jan 2014 11:11:56 +0000

With a few days of interval I received two very different ways of reviewing data collected by users of “activity trackers”.

The first one came from Jawbone (although I don’t own the UP, I might have subscribed to one of their mailing-lists earlier) and is also publicly available here. Named “2013, the big sleep” it a kind of infographics of how public (and mostly American) events influenced sleep of the “UP Community”. Here data about all (or at least a lot of) UP users were aggregated and shown. This is Big Data! This is a wonderful and quantitative insight on the impact of public event on sleep! But this is also a public display of (aggregated) individual data (something that UP users most probably agreed by default when accepting the policy, sometimes when they first used their device).

Privacy -vs- information conservation time

Mon, 28 Oct 2013 11:27:42 +0000

In my opinion privacy issues are a by-product of information conservation times reaching infinite.

For centuries and more humans were used to their own type of memory. When information reaches the brain, it is stored in short-term memory. When relevant and/or repeated, it is gradually consolidated into long-term memory (this is roughly the process).

The invention of oral transmission of knowledge, written transmission (incl. Gutenberg) and, to a certain extend, internet, all these successively increased the duration of retention of information shared with others. The switch from oral to written transmission of knowledge also sped up the dissemination of information as well as its fixed, un-(or less-) interpreted nature.

Google+ API started

Thu, 15 Sep 2011 23:19:34 +0000

Google+ (G+) is a social networking and identity service operated by Google. It started a few months ago like a closed service from where you can’t get out any data and where the only possible interaction (read/write/play) is only possible via the official interfaces (i.e. the web and android clients). Google promised to release a public API and it partly did so tonight, here.

As they stated, “this initial API release is focused on public data only — it lets you read information that people have shared publicly on Google+” (emphasis is mine). So you can already take most of your data out of G+ (note that it was already possible to download your G+ stream with Takeout from the Google Data Liberation Front). As usual, it’s a RESTful API with OAuth authorization. It comes with its own rules and terms (it could be interesting to add to GooDiff). The next step would be to be able to directly write something on Google+.

We don't need a computer at home

Wed, 03 Aug 2011 01:03:00 +0000

Historically, computers were invented to solve issues in the factory or the office (university office or company office) but recently invaded home and are becoming ubiquitous.

At the beginning of this invasion, computers for home were (and are still) very similar to the ones for the industry/office: a CPU, a keyboard to enter data or commands and a screen to see what was happening. Artifacts to be attached to the computer were first invented for the corporate world and then progressively entered into homes. I still remember the first mouse we had at home: it was like a mini-revolution. After years there were still some software that could not take advantage of it or its usage was implemented but in a rudimentary way. Idem for the first webcam we acquired: only the provided software was able to use it. Now it comes embedded in most computer screen and can be used for various purposes (video chat, take pictures, read bar codes, art, …).

A question of a few centimetres

Tue, 26 Jul 2011 09:00:54 +0000

It’s funny to see that in a short span of time, a few centimetres can make a difference. This month, Austria authorised Niko Alm to wear a pasta strainer as “religious headgear” on his driving-licence ( BBC). This month too, Belgian law banned women from wearing the full Islamic veil in public ( BBC).

Well, the Belgian law doesn’t exactly formally forbid the Islamic veil although it was often named as the “anti-burqa law”. The exact terms are:

Facebook -vs- Twitter short message usage?

Sun, 19 Jun 2011 19:56:55 +0000

The other evening, we started an interesting discussion with some colleagues about usage of Twitter and Facebook. Obviously most people in the room were (and are) using Facebook and knew about the feature (“status”) allowing you to share text messages with your friends (and the whole world). Less people were aware of Twitter, although is also offers the possibility to share text messages with your friends (and the whole world too). I was wondering why most (if not all) people in the room were registered on Facebook but almost none of them were registered (or even using) Twitter. Do not even mention Identi.ca, the open source alternative to Twitter.

Facebook updates: nothing to fuss about

Fri, 08 Oct 2010 00:16:58 +0000

So Facebook, the current paramount social website, updated its website with the possibility to download all your data (among other updates). I don’t see why people need to fuss about this.

Although maybe useful, the important is not to be able to retrieve your data. After all, if your pictures are on Facebook, they were previously on your computer / camera / whatever. So you should already have them (and Facebook sends them to you in a zip file? what a feature!). Unless Facebook allows you to also download data about you but uploaded by others; this is a bit more interesting from a sociological / academic point of view (what has been posted about you). And then? A “big” step towards interoperability between social websites? Are you joking? For interoperability, you need 2 partners and, to my knowledge, no other websites (social or not) are currently offering the possibility to upload data from Facebook. Will it arrive? I’m sure of it. Is it secure? I doubt it: nothing is 100% secure in IT, Facebook is no exception. But this is still not important!

Belgian eavesdropping increased in 2009

Tue, 11 May 2010 22:09:34 +0000

Following this article (French), official phone eavesdroppings again increased in Belgium in 2009: Belgian police listened 5265 times to private conversations. The French transcript is here.

One doesn’t get much more than these numbers: nothing about the number of hours spent listening, nothing about the percentage of effectiveness/results, nothing about internet eavesdropping (e-mail e.g.). One thing struck me: all requests for eavesdropping were accepted. Or, at least that what the Minister implied when he wrote “there is no distinction between the number of requests and the number of effective eavesdropping”.

Belgian State Security report 2008

Fri, 29 Jan 2010 16:28:27 +0000

When I first opened the Belgian State Security Report 2008 (PDF in French or in Dutch), I had the a feeling of déjà vu: the cover picture is in fact a part of the Great Court of the British Museum in London, UK. Strange for a report on Belgian security and surveillance …

Comparison between an actual photo of the British Museum Great Court (left, by Guillermo Viciano, under CC-by-sa) and the cover of the Belgian State Security Report 2008 (right)

Live picture from the Bruxelles Grand Place

Sat, 16 May 2009 19:15:32 +0000

On the Bruxelles website, you can watch from and move a webcam on the Grand Place. The resolution is good enough to distinguish faces in you zoom. But what is more interesting (imho), is that the stream from the webcam is just a stream of still images from http://www.brucity.be/webcam.jpg. The image below was the current image from the webcam when you loaded this page ; reload the page to see another picture …

Belgian police is storing personal details in a database

Fri, 24 Oct 2008 22:45:48 +0000

If you live in Belgium, you probably noticed a small bu zz about a database police is building about Belgian citizens and, more precisely, about the access control of this database. The “problem” is that this database already exists and it has a legal basis since … 1998 (10 years!). But mainstream media won’t tell you that (or I’m unaware of it). I don’t think there is a conspiracy. It’s just that, sadly, the current economic environment doesn’t leave much space for this kind of information. The Minister of Justice’s website has more info on this database and its content (excerpt of translation below):

Online photos and privacy

Thu, 07 Jun 2007 19:00:43 +0000

Last week-end, I walked in the city center and posted some photos of sceneries and people on Flickr. It was the first time I posted photos of people I really don’t know (I already posted photos with people from parties where attendees want to see them online).

I recently read some articles ( 1, 2, 3) and blog posts about privacy and a new service from Google: Street view. I was then wondering if they are rules or regulations regarding online privacy for non-publishers (for online media).