The present invention relates to a method of tracking a reference element (E.sub.ref) on images of an environment, the reference element (E.sub.ref) being associated with a list of reference visual signatures, the method comprising the steps of: reception of an image of the environment, detection of a first element on the received image, determination of a first visual signature for detection, calculation of a distance between the first visual signature and a reference visual signature, comparison of the calculated distance to a first threshold and a second threshold, identification of the first element as being the reference element, when the distance compared is less than or equal to the first threshold, the first element being unidentified when the distance compared is strictly greater than the second threshold.

Embodiments of the invention are generally directed to systems, methods, devices, and machine-readable mediums for implementing gesture-based signature authentication. In one embodiment, a method may involve recording a first gesture-based signature and storing the recorded first gesture-based signature. Then the method compares the first gesture-based signature with a second gesture-based signature. Then the method verifies the first gesture-based signature as authentic when the first gesture-based signature is substantially similar to the second gesture-based signature.

Embodiments of the invention are generally directed to systems, methods, devices, and machine-readable mediums for implementing gesture-based signature authentication. In one embodiment, a method may involve recording a first gesture-based signature and storing the recorded first gesture-based signature. Then the method compares the first gesture-based signature with a second gesture-based signature. Then the method verifies the first gesture-based signature as authentic when the first gesture-based signature is substantially similar to the second gesture-based signature.

Embodiments of the invention are generally directed to systems, methods, devices, and machine-readable mediums for implementing gesture-based signature authentication. In one embodiment, a method may involve recording a first gesture-based signature and storing the recorded first gesture-based signature. Then the method compares the first gesture-based signature with a second gesture-based signature. Then the method verifies the first gesture-based signature as authentic when the first gesture-based signature is substantially similar to the second gesture-based signature.

Embodiments of the invention are generally directed to systems, methods, devices, and machine-readable mediums for implementing gesture-based signature authentication. In one embodiment, a method may involve recording a first gesture-based signature and storing the recorded first gesture-based signature. Then the method compares the first gesture-based signature with a second gesture-based signature. Then the method verifies the first gesture-based signature as authentic when the first gesture-based signature is substantially similar to the second gesture-based signature.

Embodiments of the invention are generally directed to systems, methods, devices, and machine-readable mediums for implementing gesture-based signature authentication. In one embodiment, a method may involve recording a first gesture-based signature and storing the recorded first gesture-based signature. Then the method compares the first gesture-based signature with a second gesture-based signature. Then the method verifies the first gesture-based signature as authentic when the first gesture-based signature is substantially similar to the second gesture-based signature.

Embodiments of the invention are generally directed to systems, methods, devices, and machine-readable mediums for implementing gesture-based signature authentication. In one embodiment, a method may involve recording a first gesture-based signature and storing the recorded first gesture-based signature. Then the method compares the first gesture-based signature with a second gesture-based signature. Then the method verifies the first gesture-based signature as authentic when the first gesture-based signature is substantially similar to the second gesture-based signature.

A smart locker includes electronics to operate a user interface, including a keypad, and to receive user commands via the keypad to lock or unlock the smart locker with an electronic lock. The smart locker also receives primary input power and provides direct charging power and wireless charging power for charging electronic devices. The smart locker also is capable of receiving secondary input power to operate the electronic lock in the absence of the primary input power.

Disclosed is a writing implement for effecting an electronic transaction via a payment terminal. The writing implement includes a communications device comprising a payment vehicle identifier. The payment vehicle identifier is associated with a payment vehicle from which funds can be drawn for effecting the electronic transaction. The communications device is configured to send the payment vehicle identifier to the payment terminal. The writing implement also includes a writing member for producing an authenticating mark to authenticate use of the payment vehicle.

Embodiments of the invention are generally directed to systems, methods, devices, and machine-readable mediums for implementing gesture-based signature authentication. In one embodiment, a method may involve recording a first gesture-based signature and storing the recorded first gesture-based signature. Then the method compares the first gesture-based signature with a second gesture-based signature. Then the method verifies the first gesture-based signature as authentic when the first gesture-based signature is substantially similar to the second gesture-based signature.