Cryptocurrency management systems and methods with wireless activation
A cryptocurrency management device (CMD) may be used to perform various cryptocurrency management functions, such as storage of cryptocurrency, user authentication, and initiation or processing of a transaction for transferring cryptocurrency. To conserve the power resources of the CMD, components of the CMD may be transitioned to a sleep state for extended periods of time. Such components may be automatically activated by a user touching the CMD or bringing a wireless communication device within range of the CMD. The circuitry of the CMD that triggers the activation are capable of continuously monitoring for such inputs over extended periods of time without consuming significant amounts of power, thereby conserving the power resources of the CMD.
1 . A cryptocurrency management device, comprising:
a fingerprint sensor having a transparent surface through which an image of a fingerprint is captured by the fingerprint sensor, wherein the fingerprint sensor has a conductive bezel positioned around the transparent surface, and wherein a change in capacitance initiates a transition from a sleep state to an awake state of the cryptocurrency management device;
at least one processor configured to store at least one private key for use in generating an authenticating signature for a multi-signature address of a cryptocurrency network and perform operations for managing cryptocurrency associated with the multi-signature address, including authorization of at least one transaction for transferring the cryptocurrency, the at least one processor configured to authenticate a user based on the image of the fingerprint captured by the fingerprint sensor, wherein a power consumption by the at least one processor exceeds a threshold while the at least one processor is in the awake state, and wherein the power consumption by the at least one processor is less than the threshold but greater than zero while the at least one processor is in the sleep state;
circuitry electrically coupled to the conductive bezel and the at least one processor, the circuitry configured to detect the change in capacitance of the conductive bezel indicative of a touch by the user, the circuitry further configured to transmit an activation signal for activating the at least one processor in response to detection of the change in capacitance, wherein the at least one processor is configured to transition from the sleep state to the awake state in response to the activation signal; and
a non-transitory computer-readable storage medium coupled to the at least one processor, the non-transitory computer-readable storage medium configured to store an indication of receipt of the activation signal.
2 . The cryptocurrency management device of claim 1 , further comprising:
a ground plane; and
one or more diodes electrically coupled to the conductive bezel and the ground plane, wherein the one or more diodes are configured to provide an electrical path between the ground plane and the conductive bezel in response to an electrostatic discharge, thereby grounding the conductive bezel.
3 . The cryptocurrency management device of claim 2 , wherein the one or more diodes comprise TVS diodes.
4 . The cryptocurrency management device of claim 2 , wherein the one or more diodes are configured to allow the circuitry electrically coupled to the conductive bezel to detect the change in capacitance of the conductive bezel without the electrostatic discharge.
5 . The cryptocurrency management device of claim 4 , further comprising:
an antenna for receiving a wireless signal from a mobile device; and
communication circuitry coupled between the at least one processor and the antenna, wherein the at least one processor, upon transitioning to the awake state, is configured to cause at least one component of the communication circuitry to transition to the awake state from the sleep state, thereby enabling communication between the cryptocurrency management device and the mobile device.
6 . A cryptocurrency management device, comprising:
a fingerprint sensor having a transparent surface through which an image of a fingerprint is captured by the fingerprint sensor, wherein the fingerprint sensor has a conductive bezel positioned around the transparent surface, and wherein a change in capacitance initiates a transition from a sleep state to an awake state of the cryptocurrency management device;
at least one processor configured to authenticate a user based on the image of the fingerprint captured by the fingerprint sensor, wherein a power consumption by the at least one processor exceeds a threshold while the at least one processor is in the awake state, and wherein the power consumption by the at least one processor is less than the threshold but greater than zero while the at least one processor is in the sleep state;
circuitry electrically coupled to the conductive bezel and the at least one processor, the circuitry configured to detect the change in capacitance of the conductive bezel indicative of a touch by the user, the circuitry further configured to transmit an activation signal for activating the at least one processor in response to detection of the change in capacitance, wherein the at least one processor is configured to transition from the sleep state to the awake state in response to the activation signal; and
a non-transitory computer-readable storage medium coupled to the at least one processor, wherein the at least one processor is configured to execute instructions stored in the non- transitory computer-readable storage medium while in the awake state and after receipt of the activation signal.
7 . The cryptocurrency management device of claim 6 , further comprising:
a ground plane; and
one or more diodes electrically coupled to the conductive bezel and the ground plane, wherein the one or more diodes are configured to provide an electrical path between the ground plane and the conductive bezel in response to an electrostatic discharge, thereby grounding the conductive bezel.
8 . The cryptocurrency management device of claim 7 , wherein the one or more diodes comprise TVS diodes.
9 . The cryptocurrency management device of claim 7 , wherein the one or more diodes are configured to allow the circuitry electrically coupled to the conductive bezel to detect the change in capacitance of the conductive bezel without the electrostatic discharge.
10 . The cryptocurrency management device of claim 9 , further comprising:
an antenna for receiving a wireless signal from a mobile device; and
communication circuitry coupled between the at least one processor and the antenna, wherein the at least one processor, upon transitioning to the awake state, is configured to cause at least one component of the communication circuitry to transition to the awake state from the sleep state, thereby enabling communication between the cryptocurrency management device and the mobile device.
11 . The cryptocurrency management device of claim 10 , wherein the at least one processor is configured to store at least one private key for use in generating an authenticating signature for a multi-signature address of a cryptocurrency network and perform operations for managing cryptocurrency associated with the multi-signature address, including authorization of at least one transaction for transferring the cryptocurrency.
12 . The cryptocurrency management device of claim 11 , wherein in response to authenticating the user, the at least one processor is configured to cause the at least one private key to be transmitted to the mobile device.
13 . The cryptocurrency management device of claim 7 , wherein the ground plane comprises isolation material that is configured to minimize parasitic capacitance of the one or more diodes.
14 . The cryptocurrency management device of claim 6 , wherein the fingerprint sensor comprises a capacitive touch sensor configured to sense the change in capacitance caused by a presence of a finger of the user.
15 . A method of waking a cryptocurrency management device, comprising:
receiving a touch of a user by a conductive bezel of a fingerprint sensor of the cryptocurrency management device, wherein the cryptocurrency management device is in a sleep state;
detecting a change in capacitance of the conductive bezel by circuitry electrically coupled to the conductive bezel and at least one processor of the cryptocurrency management device, wherein the change in capacitance initiates a transition from the sleep state to an awake state of the cryptocurrency management device, wherein a power consumption by the at least one processor exceeds a threshold while the at least one processor is in the awake state, and wherein the power consumption by the at least one processor is less than the threshold but greater than zero while the at least one processor is in the sleep state;
transmitting, by the circuitry, an activation signal to the at least one processor in response to detecting the change in capacitance;
transitioning the at least one processor from the sleep state to the awake state in response to the activation signal; and
storing, in a non-transitory computer-readable storage medium coupled to the at least one processor, an indication of receipt of the activation signal.
16 . The method of claim 15 , further comprising:
receiving, by the conductive bezel of the fingerprint sensor, an electrostatic discharge; and
dissipating the electrostatic discharge through one or more diodes to a ground plane.
17 . The method of claim 16 , wherein the one or more diodes are electrically coupled to the conductive bezel and to the ground plane, wherein the one or more diodes allow the circuitry electrically coupled to the conductive bezel to detect the change in capacitance of the conductive bezel without the electrostatic discharge.
18 . The method of claim 15 , wherein the at least one processor stores at least one private key for use in generating an authenticating signature for a multi-signature address of a cryptocurrency network and perform operations for managing cryptocurrency associated with the multi-signature address, including authorization of at least one transaction for transferring the cryptocurrency.
19 . The method of claim 18 , wherein in response to the at least one processor transitioning to the awake state:
the at least one processor causes communication circuitry that is coupled between the at least one processor and an antenna to transition to the awake state from the sleep state; and
the at least one processor causes the communication circuitry to transmit the at least one private key to a mobile device via the antenna.
20 . The method of claim 19 , further comprising:
in response to the at least one processor transitioning to the awake state, detecting, via a touch sensor of the fingerprint sensor, a fingerprint of the user; and
authenticating the user based on the detected fingerprint.