Patent ID: 9594888
Date: 2017-03-14
CPC Classifications: G06F,H04L,Y04S

Claim:
1. A processorless user authentication device, comprising: a chargeable device; a photovoltaic panel for charging the chargeable device, wherein the photovoltaic panel is arranged such that the chargeable device is charged when the photovoltaic panel is exposed to light; an input mechanism for facilitating the release of charge from the chargeable device; a non-volatile memory including a pre-produced sequence of one-time passwords; a circuit board constructed and arranged for indexing into the non-volatile memory of the hardware device upon a request for a one-time password to read the one-time password; and an output device constructed and arranged to output a read one-time password, wherein the output device comprises a display for displaying one-time passwords; characterized in that indexing includes dividing a numeric value used for indexing by a number of one-time password elements in the non-volatile memory, using the result as the offset to read a first one-time password from the non-volatile memory, using the remainder of the division as an offset to read a second one-time password from the non-volatile memory, and exclusive-oring the first one-time password and the second one-time password to produce the one-time password.