Can duct tape block a WiFi signal?

Well, this may be a surprise to my if you, as it's been to me: electrical tape CAN indeed block WiFi waves. I'll tell you about me recent experience, and the tests I performed that led me to that conclusion. read more

There are materials that passively block wifi. Wireless communication is made possible by generating and receiving radio waves. The energy from these waves can be absorbed, reflected, refracted, similar to how light behaves. read more

Download and install a program for your wireless device that can measure the signal strength of a Wi-Fi connection. Some programs will provide a "signal quality" rating on a scale of 0–100, but ideally you should use a program that provides measurements in dBm. read more

All duct tape will do is leave a sticky residue on your phone. Although I guess that wrapping it in tape will prevent anyone from using it, or charging it, so that the battery will run down and then it will use no billable data. read more