Extramarks, a privately developed learning app apparently designed for children with an estimated 100,000 installs, was found by HRW to have the ability to collect children’s precise location (GPS, last known location and Wi-Fi network name), contacts and contacts’ photos, call and SMS logs, camera and microphone access, and advertising, Wi-Fi MAC and IMEI identifiers. HRW said the app does not disclose collecting contacts information in its privacy policy, and that this data was neither necessary for the app to function nor of educational benefit. HRW listed it among nine apps potentially engaging in ID bridging, and Extramarks did not respond to HRW’s request for comment.