What materials can block a wifi signal?

My last job was to design and test the Wi - Fi module. There are hundreds of access points in the building, and there are also random signals from various laboratories. There are shield rooms over dozens that need to block the signal when testing a sensitive receiver. Basically these are metallic boxes with metal screens on the A / C vent with bypass capacitors on the input power line. The door is sealed with a conductive brass "finger sleeve", and every few months the staff cleanse the seal before using the contact protection agent.

As you look at the spectrum analyzer or the phone and the door handle moves the signal will appear before the door starts to move considerably

Can you imagine broadcasting a WiFi signal in the air that broadcasts on radio to make your WiFi device work? This is the truth! The problem is that WiFi signals are sometimes blocked by various things no matter where you are. This is because the WiFi signal received by your device is always weaker than the intrinsic strength you should have. We usually have a lot of furniture at home: usually sofas, wardrobes, cabinets, tables, chairs, beds etc. Usually, most are not obstacles, but if they are big enough and the WiFi router is nearby , The signal becomes significantly weaker. Therefore, please do not hide the router behind large furniture such as sofa and bed, or place it between furniture and wall.

When it comes to WiFi signal strength, more is not always better. From a security standpoint, your goal should be to provide enough WiFi signals only in the area you need. If the WiFi signal reaches public places beyond the walls of the building, you may invite people trying to break into the network or interfere with the wireless signal. MDM is more than just management of BYOD devices, there are also security elements. For most MDM solutions, you can isolate devices that do not meet the configured security criteria, restrict application installation, and implement data loss prevention (DLP) using GeoFence and other technologies.