App A want to know if iPhone user is looking at the photo one of the family member and display some information related to that user?

I am trying to change the color of usdz asset provide by my designer. But I am unable to do. Can some help me with some sample code

Hi Team, I am reaching out to you because I've encountered an issue with iOS versions 16.3.1 and later. Scenario: We have implemented facial authentication for seamless auto-login into our application. Upon successful facial authentication, the application proceeds to make requests to our APIs. However, we are encountering timeout errors when the API requests are in progress and the app is moved to the background. Strangely, this issue emerged after upgrading to the latest release from a previously stable version (iOS 16.3). Despite reviewing the release notes, we have not identified any pertinent information about new policy restrictions that might be causing this problem. We are actively seeking guidance on resolving this issue, aiming to restore the previously functional behavior of the application

I am trying to disable the screenshot on iOS app but apple does not expose any api for this. Due to which I added a workaround when iPhone will try to take screenshot we have a textfield in secured way which will cover the whole screen and screenshot will be blank. Does anyone tried the same approach to avoid screenshot? if yes did apple act against those application or they reject if they find. It will be great help if Apple can provide us some insight on it.