Protection and communication, inside and outside the home. After several years of experience installing and repairing thousands of traditional telephones, we decided to go a step further, developing a new concept of security for buildings that is already a trend in many other countries such as Germany, France or the USA. A device that is installed at the access to each Building that allows us to have a record of everyone who calls our home without having to be at home, taking advantage of our smartphones and tablets, thus increasing the security of our homes and saving between 30- 80% in its installation compared to other systems on the market.