Some of you will have seen the Arduino demonstrated at my recent talk. This article is about how one has been used to defeat the electronic locks found in most hotel rooms around the world.
Quite frightening really ...... and one to take into account when you are traveling. For those of you interested in the background, following the links in the article gives the full detail of what is possible and how to do it..... even more frightening. It appears that with basically the board I demonstrated and a little(?) know-how, most hotel rooms are an "open door". This information is now in the public domain and there are a lot of clever and unscrupulous (you need to be both!) people out there. It looks like the basic problem is that the lock makers never expected anyone to be able to do this sort of thing, so left easy access to the lock codes wide open.