Research shows COPPA Data Privacy Violations
Many reputable sources have repeatedly warned that devices and applications aimed at children are routinely in violation of the "Children's Online Privacy Protection Act" (COPPA). What makes this troublesome is that there are no simple solutions to protect the privacy and data of children while using "devices" - for instance tablets, gamepads (Nintendo or LeapPad), Smart Televisions, and game consoles. A great resource for keeping up to date on this topic is Mozilla's "Privacy Not Included" which offers reviews and frequent updates on privacy concerns for toys. For Applications, there is no entity enforcing compliance with COPPA or general data privacy standards. To learn more, here is a link to the original research on Internet privacy and COPPA.
The best protection is to ensure all your devices are using a network connection that anonymizes your Internet connection and protects your data privacy.