>Sync is opt-in. https://www.epubor.com/whispersync-for-kindle.html https://www.epubor.com/whispersync-for-kindle.html "And "Whispersync for Books" is enabled

>Sync is opt-in. https://www.epubor.com/whispersync-for-kindle.html https://www.epubor.com/whispersync-for-kindle.html "And "Whispersync for Books" is enabled on Kindle Fire, Kindle devices and apps by default." https://smallbusiness.chron.com/amazon-whispernet-work-58992.html https://smallbusiness.chron.com/amazon-whispernet-work-58992... "Whispersync is on by default in all new Kindles, but you can turn off the option on individual devices if you have multiple readers attached to your account." https://ebookfriendly.com/how-to-disable-data-collection-kindle-or-fire/ https://ebookfriendly.com/how-to-disable-data-collection-kin... "How to disable data collection on your Kindle or Fire device"