SGS Doorcontrol gives you the opportunity to open entrance doors in your apartment building. In order for it to work, your residential area must be equipped with this functionality, you can see if your residential area has this on hemma.sgs.se. Additionally, for the opening of the entrance door to work, your mobile must be connected to your own wifi network, which is connected to the outlet in your apartment. Thus, the application does not work over 3G / 4G or other wifi networks.