Allthenticate is a unified authentication platform that consolidates physical and digital access control into a single mobile credential. Employees use the Allthenticator smartphone app to authenticate across all organizational resources — including office doors, workstations, web applications, and SSH servers — eliminating the need for separate tokens, keycards, or passwords. **Physical Access Control:** The platform includes proprietary BLE (Bluetooth Low Energy) smart readers ("ALL-IN" readers) that can be installed on existing door hardware. Doors can be configured to unlock automatically based on proximity, require a tap confirmation, or demand biometric verification. **Device Login:** The app enables passwordless login on Windows, Mac, and Linux systems. Authentication extends to system-level prompts including sudo and web browser prompts. **Web & SSO Authentication:** Passwordless login is supported for websites and SSO-integrated applications. A patented Proximity Login feature automatically refreshes sessions when the user's phone is nearby. **SSH & Git Access:** SSH private keys are stored in the phone's hardware security element rather than on disk (~/.ssh). The same key works across all of a user's computers and can be used to sign Git commits. **Three-Level Assurance Model:** Authentication requirements are configurable per resource: Presence (proximity-based), User Intent (tap to approve), and Identification (biometric or PIN). **Administration:** A cloud-based portal provides unified management of doors, computers, and web applications. It includes access logs, remote lock/unlock, scheduled events, guest access via secure links, and API hooks for IAM automation. User onboarding and offboarding is applied across all connected systems simultaneously.