Cellphone jammers are illegal in most countries (the military excepted) but in France, since 2004, it is legal to use jammers in cinemas and theatres.
A cellphone jammer is a device that emits signals in the same frequency range that cellphones use, effectively blocking their transmissions by creating strong interference. In Europe those frequencies are gsm [...]
Archive for the ‘wireless’ Category
Health risk of cellphone jammers in French cinemas
Posted in Grenelle, health, wireless on May 29, 2009 | 2 Comments »
