An anonymous reader shares a report: Kids' smartwatches are usually intended to help parents feel at ease that their children are safe when they're not around. But as it turns out, a number of these devices may do more harm than good. A 49-page report on smartwatches for children details all the ways in which they are a security nightmare. The report (PDF), conducted by the Norwegian Consumer Council (NCC) and European security firm Mnemonic, analyzed four kids' smartwatches -- Gator 2, Tinitell, Viksfjord, and Xplora. According the NCC's report, two of the aforementioned devices were vulnerable to hackers, affording them the ability to remotely control the apps on the device. Through a breached device, the NCC says a hacker could access information on a child's whereabouts in real-time, uncover their personal information, and even communicate with the child. What's more, one of the devices could allow someone "with some technical knowledge" to discreetly listen to the child's surroundings. Beyond these gross invasions of privacy, the Council said certain key features of these devices -- an SOS button and a feature that alerts parents when kids leave virtual boundaries -- were unreliable. The report also notes issues regarding collecting user data -- only one of the product's terms and services allowed parents to opt in to or out of data collection. And one watch, the Xplora app, gave up children's data to marketers, the NCC said.