The proposal for the eIDAS Regulation calls the recipients of data relying parties. These parties include various service providers, such as online stores and electronic public services. The proposal includes a requirement that wallet applications must have a technical feature that enables the user to identify the service provider to whom the user wants to send their data. The proposal also includes an obligation for service providers to notify the authorities if the service provider wants to enable the use of wallet applications to access their services. For example, a service provider could enable the use of a wallet application for electronic authentication or to verify other data. The authorities would maintain a list of service providers who have notified the authorities that they allow the use of wallet applications.