Part 7/13:
Secure Elements: Chips that isolate private keys from external access.
Treasure Save 5: Incorporates recent models with secure elements.
Ledger Devices: Designed with secure elements embedded throughout.
Blockstream Jade Plus: Does not have a hardware secure element but relies on a "virtual secure element" via a key server, which introduces some reliance on external infrastructure.
Cold Card Q: Features dual secure elements, enhancing physical security.
Bit Key: Equipped with a secure element chip for key security.
Open Source Firmware:
Treasure: Fully open source, allowing complete auditability.
Ledger: Proprietary firmware; some open-source components, but core firmware remains closed.