coreLocation Detection

- (BOOL)isValidLocation:(CLLocation *)newLocation
        withOldLocation:(CLLocation *)oldLocation
{
    // Filter out nil locations
    if (!newLocation)
    {
        NSLog(@"No es valido newLocation is Nil");
        return NO;
        
    }
    
    // Filter out points by invalid accuracy
    if (newLocation.horizontalAccuracy < 0)
    {
        NSLog(@"No es valido horizontalAccuracy < 0");
        return NO;
    }
    
    // Filter out points that are out of order
    NSTimeInterval secondsSinceLastPoint =
    [newLocation.timestamp timeIntervalSinceDate:oldLocation.timestamp];
    
    if (secondsSinceLastPoint < 0)
    {
        NSLog(@"No es valido secondsSinceLastPoint = %f ",secondsSinceLastPoint);
        return NO;
    }
    
    // Filter out points created before the manager was initialized
    NSTimeInterval secondsSinceManagerStarted =
    [newLocation.timestamp timeIntervalSinceDate:startTime];
    
    if (secondsSinceManagerStarted < 0)
    {
        NSLog(@"No es valido secondsSinceManagerStarted < 0 => %f",secondsSinceManagerStarted);
        return NO;
    }
    NSLog(@"ES VALIDO");
    // The newLocation is good to use
    return YES;
}