@@ -30,10 +30,20 @@
  */
 @interface OFSecureData: OFData
 {
 	size_t _mappingSize;
 }
+
+#ifdef OF_HAVE_CLASS_PROPERTIES
+@property (class, readonly, nonatomic, getter=isSecure) bool secure;
+#endif
+
+/*!
+ * @brief Whether OFSecureData is secure, meaning preventing the data from
+ *	  being swapped out is supported.
+ */
++ (bool)isSecure;
 
 /*!
  * @brief Creates a new, autoreleased OFSecureData with count items of item
  *	  size 1, all set to zero.
  *