- 55 - © 2018 unitech Electronics Co., Ltd. All rights reserved.unitech is a registered trademark of unitech Electronics Co., Ltd.MS652 User’s Manual3.5.2 Code 11 Check Digit VerificationThis feature allows the engine to check the integrity of all Code 11 symbolsto verify that the data complies with the specified check digit algorithm.Scan one of the following bar codes to specify the number of check digitsencoded in the Code 11 symbols, or to disable this feature.Disable*One Check DigitTwo Check Digits