Lidl Stiftung & Co. KG provides the IT-based service central cash auditing (ZKP) to corporations of the Lidl group. The underlying central cash auditing software is used to detect fraudulent manipulations of cashing procedures by checkout clerks. Point-of-sale data is analysed by the software in order to identify typical fraud scenarios or suspicious performance indicators. If suspicious cases are identified, then competent sales managers at the corporation from which the respective POS data was received are informed thereof. They may then reveal the checkout clerks behind the associated pseudonyms and initiate disciplinary actions.
When providing the auditing services, Lidl Stiftung processes pseudonymous data of checkout clerks on behalf of the respective corporations of the Lidl group. Lidl Stiftung maintains documentation which provides comprehensive and understandable information about the functionality of central cash auditing and its data protection implications.
LIDL Central Cash Auditing (ZKP)
Function as provided in August 2021
Qualification: IT-based service (processor service)
Version of Certification Criteria
21/10/2021 – 31/10/2023
Recertification No. 1: 13/02/2019
Initial Certification: 05/07/2016
Lidl Stiftung & Co. KG
Contact: Mr. Masuda
Central cash auditing as it is conducted by Lidl Stiftung lives up to the principle of proportionality. If potential losses do not exceed specific threshold values, the underlying suspicious cases are not indicated by the central cash auditing software. In addition, Lidl provides for an informational separation of powers: Auditors of Lidl Stiftung are only able to access pseudonymous data, but they cannot identify the checkout clerks behind the pseudonyms (unless they spend disproportionate efforts to identify the respective persons).
Lidl Stiftung maintains up-to-date documentation which deals with all data protection aspects of central cash auditing and provides useful appendices such as an information letter that may be used to inform checkout clerks prior to the roll-out of central cash auditing at a corporation of Lidl group.
The central cash auditing software is used to detect fraudulent manipulations of cashing procedures by checkout clerks. Point-of-sale data is analysed by the software in order to identify typical fraud scenarios and suspicious performance indicators.
Central cash auditing is performed by Lidl Stiftung. When inspecting POS data, competent auditors of Lidl Stiftung can only access pseudonymous data. If strong suspicious cases are identified, they are communicated to the respective corporation of the Lidl group. Subsequently, competent sales managers of this corporation conduct further checks which may confirm or refute a suspicion. These sales managers alone are capable of correlating a pseudonym with the checkout clerk behind it.
Central cash auditing is not used for the purpose of performance monitoring or in order to identify need for training of checkout clerks.
The recertification took place on the basis of v201701 of the EuroPriSe criteria catalog for IT products and IT-based services. The ToE changed in several regards (in comparison with the previous recertification). For details, please cf. the short public report.
The recertification took place on the basis of v201701 of the EuroPriSe criteria catalog for IT products and IT-based services. The ToE changed slightly (in comparison with the previous recertification). For details, please cf. the short public report.
Initial Certification 07/2016:
The target of evaluation (ToE) of this certification is not limited to the central cash auditing software, but it does also cover the following processes which are related to the use of the software:
- Preparation of POS data for evaluation (which includes the transmission of POS data from stores to Lidl Stiftung),
- all processing operations that are related to the central cash auditing as such,
- retransmission of POS data to the respective corporation.
The following components do not form part of the ToE:
- Programming of the central cash auditing software, because the programming is performed by a service provider on behalf of Lidl,
- the management information system which supplies the POS data to be analysed by the central cash auditing software.
Technical and Legal Evaluator (since 07/2018)
Dr. Irene Karper LL.M.Eur.
datenschutz cert GmbH
Technical and Legal Evaluator (until 06/2018)
Prof. Dr. Friedrich Holl