This book describes some technologies used by the Aliens for their objectives. It's a complementary book to read together to the other three "Where you Lean", "Alien Body Human Soul" , "Ull Tmet". This book has been realized thanks to a previous publication inherent a reckless action of the Alien to take contact with the people on this planet. This publication is called " Contact of mass" and it describes many things among whom also many technical features used by the Aliens. It has been completed also thanks at the use of a lot of AI. It can surely give out an idea to master for the future new technologies to allow the human species a rapid growth and progress for a peaceful contact with other civilizations.