No lights or visual changes can be seen on the Mobile Equipment (ME). No Log creation Software cannot be traced inside the phone Software silently starts up on phone boot or restart; if it is in Active State Configuration SMS when arrive on the target phone cannot be viewed in the Inbox nor do they represent any visual changes on the screen. Activation of the Software Deactivation of the Software Change the Secret code to manage the software Change the Pre-Defined Number Query for the Status of the software on the phone. Any Key Disconnect: When a Room Monitor is placed, these calls will be disconnected as soon as the user presses a key to avoid any suspicion to the Target User. Caller Breakthrough: If an incoming call arrives to the target phone, while a Room Monitor call is in progress, the Room Monitor Call will automatically disconnect and let the phone ring as normal. Activate, Deactivate, Change the Secret Code or the Pre-defined number at any time from any phone all over the world. No restrictions.