As the functionality of the wallet is established -not for every online and offline service like MitID – both public and private sector will eventually be able to add more digital forms of identification. This means the wallet will ultimately be interoperable with other EU member states’ digital identity wallets as a secure and standardised solution across borders. The app will be launched on a voluntary basis which users will be able to download on their smartphones as a replacement for physical ID. The European e-ID meets the requirements of eIDAS as one of its primary use cases will be for digital proof of age. Selective data sharing from identity documents will preserve the privacy of individuals to avoid ‘unnecessary’ transactions.