Abstract: A case for an electronic device can include a case body including an exterior surface and an interior surface, the interior surface being positioned opposite the exterior surface. The case can additionally include a button body positioned at least partially within the case body between the exterior surface and the interior surface, the button body being movable inward and outward relative to the case body along an axis of button travel. The case can further include a biasing structure having a contact surface configured to contact the button body, the biasing structure configured to bias the button body toward the interior surface along the axis of button travel.

Abstract: An analog-to-digital converter is provided. An analog-to-digital converter comprises an interleaver receiving and processing an input signal that is an analog signal and a plurality of sub-ADCs, wherein the interleaver includes a reference circuit outputting a second voltage based on a first voltage, a high-pass filter receiving the second voltage and outputting a first signal obtained by changing a common mode voltage of the input signal to the second voltage, a sampling circuit generating a second signal obtained by sampling an alternate current component of the first signal, and a buffer outputting a third signal obtained by buffering the second signal by using a buffering circuit, and the sub-ADC converts the third signal into a digital signal by using the first voltage.

Abstract: Systems and methods for authenticating a user for a service provider system. A database including a list of device identifiers is maintained in an authentication management system. A request to authenticate a user is received from a service provider system in an authentication management system. The request includes a device identification of the device associated with the user. It is determined that the device identification is included in the list of device identifiers and an authentication verification is transmitted to the service provider system in response to determining the device identification is included in the list of device identifiers.

Abstract: Systems and methods for authenticating a user for a service provider system. A request to authenticate a user is received from a service provider system in an authentication management system. An authentication request is transmitted from the authentication management system to a registered device associated with the user. An authentication confirmation is received from the registered device in the authentication management system. An authentication verification is provided to the service provider system in response to receiving the authentication confirmation.

Abstract: Systems and methods for authenticating a user for a service provider system. A request to authenticate a user is received from a service provider system in an authentication management system. An authentication request is transmitted from the authentication management system to a registered device associated with the user. An authentication confirmation is received from the registered device in the authentication management system. An authentication verification is provided to the service provider system in response to receiving the authentication confirmation.

Abstract: Methods and systems are provided for authenticating a user with a service provider by implementing an independent authentication management server along with its accompanying cross-platform device application installed on a user's device which provides, among other things, a secure and seamless exchange of sensitive data between a user and the service provider. An authentication management server system may further create, store, and manage a user's sensitive data and securely manage exchange of various requests and corresponding approvals between a user and the service provider.