Prevent "UIDevice.uniqueIdentifier" from returning real UDID value.

UDIDkiller.h

/**
    It prevents UIDevice.uniqueIdentifier method from returning real UDID vaue.
    It is useful to  prevent closed-source libralies to fetch users' UDIDs against
    your will.
*/

@interface UIDevice (UDIDkiller)
-(NSString*)uniqueIdentifier;
@end

UDIDkiller.m

#import "UDIDkiller.h"

@implementation UIDevice (UDIDkiller)
-(NSString*)uniqueIdentifier {
    NSLog(@"CAUTION!!! UIDevice.uniqueIdentifier was called.");
    return @"";
}
@end