<!--- Copyright (C) 2019 Robin Krahl <robin.krahl@ireas.org> SPDX-License-Identifier: CC0-1.0 --> - Clear passwords from memory. - Lock password safe in `PasswordSafe::drop()` (see [nitrokey-storage-firmware issue 65][]). - Disable creation of multiple password safes at the same time. [nitrokey-storage-firmware issue 65]: https://github.com/Nitrokey/nitrokey-storage-firmware/issues/65