Various systems and methods for locking computing devices are described herein. In an example, a portable device comprises an electro-mechanical lock; and a firmware module coupled to the electro-mechanical lock, the firmware module configured to: receive an unlock code; validate the unlock code; and unlock the electro-mechanical lock when the unlock code is validated. In another example, device for managing BIOS authentication, the device comprising an NEC module, the NEC module comprising an NEC antenna; and a firmware module, wherein the firmware module is configured to: receive an unlock code from an NEC device via the NEC antenna; validate the unlock code; and unlock a BIOS of the device when the unlock code is validated.