How to stay in touch with me ?

Instantaneous video-conference ?

  1. First, reach me by e-mail, so we agree on a date and time to call (asynchronous),

  2. Then we use the awesome and brand new website FramaTalk: or Jitsi on jitsi/ (see this page on Jitsi) !

  3. Why ? It does not require any installation or plugin, no need to create any account, no need for a specific software - just your regular web browser (a fairly recent one is needed). And it’s awesomely secured, as the conversation and messages are not spied nor registered (the communication uses peer-to-peer trafic with WebRTC, that’s safe).

  4. Other web services that I like : (by RENATER, for French researchers and teachers), (by INRIA),,, (it was before).

Traditional ways

Postal addresses

You can write a letter or some postal cards to me (I love them), at the following addresses (listed by decreasing preference):

My Office

My office, at École Normale Supérieure de Rennes, in Bruz, France (you can see it on this OpenStreetMap map)

Mr Lilian Besson
Bureau R112 - Département Informatique et Télécommunications
École Normale Supérieure de Rennes
Campus de Ker Lann
Avenue Robert Schuman
35170 Bruz - France

My Home

To my own place (in France) (you can see it on this OpenStreetMap map)

Mr Lilian Besson,
23, boulevard Jeanne d'Arc,
35000 - Rennes,


Javascript is required!

This web page embeds some small programs written in javascript. This should work in any recent web browser, supporting javascript (and it should not be disabled).


If you are a spammer, go on:! Oh, and, go kîll yoùrself also if you are a spammer!! (Well… spammers are usually bots, ie spambots, but it feels good to yell at them anyway!)

My email address in a PNG picture…

If you are not a spammer, go on, you can use one of these email addresses:


You can use this awesome website ( if you don’t have access to an email client right now.

Regular phone

My cellphone number, in a PNG picture…

To speak directly, e.g. if it is important, you can (try to) call me, you could use my French cellphone number:

You could also try to send me text messages (SMS), with the same number (obviously).

Other methods

The next solutions are way more geeky, and you will need a relatively recent computer to try them (or a smartphone).

« Ask me anything! »

These two pages can be used to ask my a question publically (everyone can see what you ask and my answer): on GitHub : (in English), (in French), both requires a GitHub account; and on Bitbucket : (in English), (in French), no need for an account.

Forms on some web pages

HTML5 Services

These web services, strongly based on the great functions offered by the HTML 5, offer the possibility to talk, to write or even to share files, dynamically.

Voir aussi

This page vieprivee.html (in French)

Some others tools are presented there, and they surely can be used to (try to) preserve your on-line private life.