The system of inteligent access Android with Arduino Smart Access Frea, it is an idea that emerges as a solution to allow for mobile devices, actually the cell is an advanced deviced that has envolved since its inception approximately the decade of 90 and has enable bring the pc supremaly small machines with very specifics skills, went from being any device to be almost necessary tool and work , home and professional supplementing the human being in his role with the society and environment. The prototype in which we worked is based on access to open a door (any that is , a building, a car, a safe box ) by a way a mobile device ; seeks to implement a joint communication between an Arduino plate at the door ; via a bluetooth connection is established between the plate and the mobile device (which only has access who is in the database authorized by the administrator) , works by generating a connection that enables a recoil allowing the door open The mobile device has an application that was developed in Android, initially tested in a simulator device, this mobile application development can connect and validate access to the cell door, access via a button located in the application ; the system validates if the individual exists , so not everyone can enter ; to be validated in the system, the door is operated and display the name of who enters appears ; This information is sent to a Web Service that handles the administrator; the data produced by the system are : the name of the person, the time, date and state income ( entry or exit ), this will generate a log of events ( inputs and outputs ) for the activities of users prototype. The work took two scenarios initially, a theoretical part where concepts that were to deploy met, then a practical part of Android and Arduino in different areas, the delivery of the prototype is to pursue the work.