Keep your portable jammers at home. Here is a unique paint which will automatically turn your cell phone off when you enter the room. NaturalNano, Inc is been developing a special paint which would allow to block specific radio frequencies. So how does this work? Here’s the solution:
1. Halloysite nanotubes coated or loaded with copper may be used in paint applied to walls to passively block specific radio frequency ranges.
2. Two-way radio-frequency transmissions from cell phones, WiFi, and other electronic devices may be blocked.
3. Using a complementary technology licensed from AMBIT Corporation, building managers may selectively override the blocking to allow the use of two-way devices in a room or building. An indoor antenna picks up cell-phone or other signals and sends them to an external antenna through an electronic filter. A facility manager can enable transmissions at specific frequencies or for specific uses. For example, police, fire and other emergency communication calls could go through.
4. An outdoor antenna transmits and receives the cell-phone (or other) signals. The antenna may also improve reception for buildings in marginal coverage areas.