Many ads have been placed to turn off mobile phones in theaters, cinemas, etc., but the ditxoso beep-beep bothers us anywhere.
Therefore, a French company has manufactured a small device of the size of the pocket book that can be placed in the restaurant or in the theater. The device sends waves that compete with telephone waves and, having their nearest origin, mobile phones receive them.
The mobile phone is not able to recognize the waves it receives, so it is quiet. Brilliant invention or limitation of freedom? For those who may have an interest in buying, it should be noted that the device remains a prototype and, at least in France, its use is prohibited.