An optical shield for keypad locks that has a frame provided with one or several structures into which standard structures (C1) fit that the lock keypads (C) have; one or several side panels that project from the frame body impeding the lateral view of the keypad of the lock (C) from an area near the user who is operating it; and means to fasten indirectly the frame to the lock module/keypad (C), without interfering in it. It can also have an additional panel, mounted on the frame and capable of sliding linearly in it, and provided with a window through which one can access a restricted area of the keypad, impeding the frontal view of the rest.

A seed phrase storage device includes a holding rod and a sequence of encoding disks configured to represent a word in a seed phrase. Each encoding disk comprises an encoding disk hole and a physical representation of a number, where the encoding disk hole enables each encoding disk to slide onto the holding rod. The storage device includes at least one separator nut including a separator nut hole that enables the separator nut to attach to the holding rod. The at least one separator nut separates a first sequence of encoding disks and a second sequence of encoding disks. The storage device includes at least one anchor nut configured to secure the separator nut and the sequence of encoding disks to the holding rod.

A seed phrase storage device includes a holding rod and a sequence of encoding disks configured to represent a word in a seed phrase. Each encoding disk comprises an encoding disk hole and a physical representation of a number, where the encoding disk hole enables each encoding disk to slide onto the holding rod. The storage device includes at least one separator nut including a separator nut hole that enables the separator nut to attach to the holding rod. The at least one separator nut separates a first sequence of encoding disks and a second sequence of encoding disks. The storage device includes at least one anchor nut configured to secure the separator nut and the sequence of encoding disks to the holding rod.