: Keys are stacked flat, eliminating the "jingle" and reducing pocket bulk.
As digital and physical security perimeters converge, the need for unified authentication devices has grown. This paper introduces the conceptual Switch Army Knife —a hardware key fob that combines the mechanical utility of a Swiss Army knife with the cryptographic functions of a hardware security key (e.g., FIDO2, YubiKey). We explore the design principles, security challenges, and practical applications of embedding multiple digital credentials (SSH, WebAuthn, TOTP) into a compact, switchblade-like chassis. switch army knife keys
: Keys are mounted parallel to each other, allowing them to fit within the handle's footprint. : Keys are stacked flat, eliminating the "jingle"