Telecom regulators in Germany have introduced a ban on children's smartwatches over privacy concerns.
Described as a "spying device", Telecoms regular the Federal Network Agency (FNA) urged parents to destroy the wearables.
The FNA said that parents had been using the smartwatches to listen to their children while at school, a thing the FNA warns the teachers to be on the lookout for.
"Via an app, parents can use such children's watches to listen to unnoticed to the child's environment and they are to be regarded as an unauthorised transmitting system," President of the Federal Network Agency, Jochen Homann said.
"According to our research, parents' watches are also used to listen to teachers in the classroom," Jochen added.
However, lack of regulation of the device also means that many have poor security system which can be easily exploited and used to spy on those wearing it.
The FNA said that it has already taken action against smartwatch markers, although they did not name any manufacturer or reveal what action that they had taken.
"This ban sends a strong signal to makers of products aimed at children that they need to be safer," Finn Myrstad, head of digital policy at the NCC said.