Private file sharing in the cloud

This week I was looking for an alternative to dropbox. Dropbox is fine for me as long as files are public and not in any way confidential. However some times I have a need to work together with colleagues and we don`t want to do so in privacy. So I was looking for a cloud service provider bases in Europe and with end to end encryption. The first I found was Wuala.

I am pretty sure there are more services like that around. Let me know if you know another one and I will add it to the article !!!

IBM® Redpaper™: Deploying IBM Flex System into a Cisco Network

Here a link I had on my blog before my server crashed ….

The IBM® Redpaper™ is released. Together with my colleagues from the Technical Expert Council, Central Region (TEC CR) we wrote this guide: Deploying IBM Flex System into a Cisco Network


Smarter City Rio de Janeiro

A few years ago I was in Brasil and browsed the net to find some nice pictures and videos of Rio. I found this video on and have to share it with you.

Rios controll system has some really nice features like

flood and landslide forecast
automated notifications to emergency personnel
weather forecast
updates available via Twitter @OperacoesRio

and Facebook at Centro de Operações Rio

and much more …

Here a second video that gives a bit more of an insight how the system is used.

Swarm of robots

With this swarm of robots my dream might come true one day. Well I guess it is a pretty common dream. A swarm of small cleaning robots! Wouldn’t that be brilliant? Hundreds of small helpers cleaning up when we are at work. OK, the vacuum robots we can buy today are not bad, but I want something than can clean on my desk and the windows as well.

Three ways to recover from WP server failure

So my server failed a few day ago. And if failed badly. All data lost, all posts gone … pretty much everything gone.

  1. The easiest way is just to restore your backups …. but when you are reading this article then you most likely do not have a backup.
  2. Use the WordPress export tool from time to time. It is under Tools -> data export This will cause you a lot of work in case you loose your data.
  3. One other way to get to your lost data is to use google cache. Just search on google for all webpages from your site. I searched for “”. This will show all sites google knows about and you can use the little symbol next to the URL to access the google cache. Now starts the manual part, open all sites in the cache and save them. After that you can use the saved pages to rebuild your website.

As you might already suspect I had to use method three to rebuild my blog. And I am not jet finished. Still several articles I need to recover.




Android ScaleGestureDetector example

I spend  quite some time to work out how the ScaleGestureDetector on Android works.

However I could not find a good example on the net. So here I post my test code in the hope that it might be useful for someone else:

public class MyTextView extends TextView implements OnTouchListener,OnScaleGestureListener {
ScaleGestureDetector mScaleDetector = new ScaleGestureDetector(getContext(), this);
public MyTextView(Context context, AttributeSet attrs) {
super(context, attrs);
Log.d("MytextView", "MyTextView");
public boolean onScale(ScaleGestureDetector detector) {
Log.d("MytextView", "onScale");
return true;
public boolean onScaleBegin(ScaleGestureDetector detector) {
Log.d("MytextView", "onScaleBegin");
return true;
public void onScaleEnd(ScaleGestureDetector detector) {
Log.d("MytextView", "onScaleEnd");
public boolean onTouch(View v, MotionEvent event) {
Log.d("MytextView", "onTouch");
if(mScaleDetector.onTouchEvent(event)) return true;

return super.onTouchEvent(event);

The trick is to generate the ScaleGestureDetector and call it from the ontouch method. The Detector will then call the scale… methods if a ScaleGesture is detected. Now just register the OnTouch callback this object and you are done:

public class ScaleActivity extends Activity {
public MyTextView mytextview;
public ScaleGestureDetector scaledetector;

/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {

mytextview=(MyTextView) findViewById(;
scaledetector=new ScaleGestureDetector(this, mytextview);

Pretty simple.