Software design and development; Software as a service (SaaS) services featuring software for designing, customizing, creating, issuing, distributing, managing, updating, and revoking digital keys compatible with digital wallets, mobile devices, and smartwatches, for issuing credentials that are compatible with pre-installed digital wallet applications on mobile devices and smartwatches, for enabling device-based authentication, contactless access control, and mobile key management, for encrypting communications and managing security for digital keys, for monitoring and providing real-time updates to digital keys, for electronic data storage, for offering APIs and SDKs for integrating digital key functionalities into third-party applications and systems, for providing data analytics and reporting tools to track the performance and usage of digital keys, for supporting MIFARE DESFire technology for seamless integration with existing access control systems, for enabling real-time remote management of access privileges, including issuing, updating, and revoking digital keys, and for ensuring functionality of digital keys even when a mobile device's battery is depleted; Providing online non-downloadable software for designing, customizing, creating, issuing, distributing, managing, updating, and revoking digital keys compatible with digital wallets, mobile devices, and smartwatches, for issuing credentials that are compatible with pre-installed digital wallet applications on mobile devices and smartwatches, for enabling device-based authentication, contactless access control, and mobile key management, for encrypting communications and managing security for digital keys, for monitoring and providing real-time updates to digital keys, for electronic data storage, for offering APIs and SDKs for integrating digital key functionalities into third-party applications and systems, for providing data analytics and reporting tools to track the performance and usage of digital keys, for supporting MIFARE DESFire technology for seamless integration with existing access control systems, for enabling real-time remote management of access privileges, including issuing, updating, and revoking digital keys, and for ensuring functionality of digital keys even when a mobile device's battery is depleted; Application service provider featuring application programming interface (API) software for designing, customizing, creating, issuing, distributing, managing, updating, and revoking digital keys compatible with digital wallets, mobile devices, and smartwatches, for issuing credentials that are compatible with pre-installed digital wallet applications on mobile devices and smartwatches, for enabling device-based authentication, contactless access control, and mobile key management, for encrypting communications and managing security for digital keys, for monitoring and providing real-time updates to digital keys, for electronic data storage, for offering APIs and SDKs for integrating digital key functionalities into third-party applications and systems, for providing data analytics and reporting tools to track the performance and usage of digital keys, for supporting MIFARE DESFire technology for seamless integration with existing access control systems, for enabling real-time remote management of access privileges, including issuing, updating, and revoking digital keys, and for ensuring functionality of digital keys even when a mobile device's battery is depleted; Technical support services, namely, troubleshooting of computer software problems