KeychainItemWrapper *wrapper = [[KeychainItemWrapper alloc] initWithIdentifier:@"Account Number" accessGroup:@"app.whatever.GenericKeychainSuite"];
[wrapper setObject:@"com.some.ident" forKey:@"w/e"];
NSString *string = [wrapper objectForKey:@"w/e"];
NSLog(string);
//Prints "com.some.ident"