Thermal insulation glass is now widely used for new constructions and for renovation. These glasses include a coating made of metal or metal oxyde, whose side effect is a strong attenuation of the mobile communications frequencies, leading to bad communications or even preventing calls.
The Lichens solution is an adhesive film printed with conductive motifs, applied on the windows. It is completely passive, and does not require any external power supply.
Besides enabling mobile communication indoors, radio frequencies transmission improvement limits electro-magnetic waves emissions, and therefore power consumed by devices.
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