sensor(integer numDetected) {
        if (numDetected) {
            nearbyNames = [];
            nearbyKeys = [];

            integer i;
            for(i=0; i < numDetected; i++) {
                nearbyNames = nearbyNames + [llDetectedName(i)];
                nearbyKeys = nearbyKeys + [llDetectedKey(i)];
            }

            llDialog(SensorID, "Nearby avatars:", nearbyNames, channel_sensor);
        }
        else {
            previousPage = "Owner";
            llOwnerSay("Sorry, but there is nobody in range to add as an owner.");
            llDialog(SensorID, "Sorry, but there is nobody in range to add as an owner.", ["<= Back"], channel_gag);
        }
    }