Project Report from the year 2019 in the subject Computer Science - Programming, grade: 1,0, Politehnica University of Timișoara, language: English, abstract: A microprocessor system project using Arduino was created in order to build an alarm system for the keyboard of a computer. The alarm system consists of blinking LEDs, sound, taking a picture of the unauthorized person, sending that image per email, login when and what that person is doing, a distraction system and also the opportunity to stop the alarm through a password. Almost every student knows the following situation. They study in the library or in the study room and then they have to leave the study room for a few minutes to go to get a fresh coffee, refill their water bottle or to go to the bathroom. But what to do with the laptop? Leaving it unsupervised for a few minutes? What happens if someone comes and tries to use it? Also at work what happens with the computer while leaving the working place for a few minutes? Can it be that someone tries to get some information from it by trying to hack the password? Also at work sometimes you cant even lock the computer, what to do when you have to leave the office for a short time? For these scenarios this paper will present a solution.