Survey shows nearly half of parents admit to using gadgets to track their children .
About 49% use an app on their child's phone to monitor their child.
London natives — 62% — were most likely to track their children, followed by Newcastle, Norwich and Brighton.
Parents in Manchester and Birmingham are the least likely, according to a study by Spacetalk, which makes smartwatches for kids with GPS trackers.
} Some admitted to joining video game chats under false names, checking their online search histories, and tracking their offspring in disguise.
One parent said:
``I didn't know where he was for two hours, and my mind was full of worry.
