How can I see which applications is reading the clipboard? Upon reading TikTok says it will stop accessing clipboard content on iOS devices, I wonder: How can I see which applications is reading the clipboard?
Prior to Android 10, all apps could access clipboard by default without even asking for permission.
Apps actually need a permission (that is automatically granted) to read the clipboard: READ_CLIPBOARD (from XDA Developers) - thanks to Andrew in comment

In Android 10, See Privacy changes in Android 10,
access to clipboard is limited to OEM apps only that have READ_CLIPBOARD_IN_BACKGROUND permission, which are keyboards and &quot;apps in focus&quot; (not sure what latter means)



Unless your app is the default input method editor (IME) or is the app that currently has focus, your app cannot access clipboard data on Android 10 or higher


TikTok would need to ask and be granted the same signature as OS since this permission is Signature permission


The system grants these app permissions at install time, but only when the app that attempts to use a permission is signed by the same certificate as the app that defines the permission.