ABC News reports that gadgets disguised as leather belts, eyeglasses, pens and USB sticks are all proving popular with employees in South Korea where abusive behaviour by people in power is so pervasive that there is a word for it — "gabjil".
Several incidents have made international headlines, most notoriously the 2014 Korean Air "nut rage" case.
Under the new legislation, which came into force on July 16, company owners who "unfairly demote or dismiss" workers who allege harassment can be imprisoned for three years or fined up to 30 million won.
Accroding to ABC News, electronics firm Auto Jungbo's sales of voice recorders so far this year have doubled to 80 devices per day.
Jang Sung-Churl, chief executive of the firm, forecast sales to also double this calendar year to 1.4 billion won.
Source: ABC News
