Radio jammers are increasingly being used as part of criminal activity. It is illegal to import, manufacture, sell or use a radio jammer in New Zealand.
Only the Department of Corrections is licensed to use radio jammers. That licence relates to maintaining prison security. (Read More)

Lambda's RF engineers spent several years of extensive RF modelling and visits to all of New Zealand Corrections facilities.

A high level of engineering was required for the effectiveness of this technology and to localise jammer signals within the correction facility while minimizing "spill over"