App Interface Guideline: Forms — Password Visibility. Keywords: secureTextEntry toggle. Platform: iOS/Android/React Native. Description: Allow toggling password visibility securely. Do: Provide Show/Hide icon toggling secureTextEntry. Don't: Force users to type blind with no option. Good Example: <TextInput secureTextEntry={secure} /><Icon onPress={toggle} />. Bad Example: <TextInput secureTextEntry /> // no toggle. Severity: Medium.