Location:
e32property.h
const TInt32 KUidSystemCategoryValue;
Property category UID value reserved for System services.
const TInt32 KUidSecurityThresholdCategoryValue;
The lowest value for Property categories at which additional security restrictions are applied when defining properties.
Properties with category values above this threshold may only be defined if the category matches the defining process's Secure ID.
Below this threashold, properties may be defined either by processes with a matching Secure ID, or by processes with the WriteDeviceData capability.