This article discusses the critical role of identity in frontline device management, differentiating between assigned and shared devices. Assigned devices are for individual users, requiring user-based identity for accountability and compliance. Shared devices fall into two categories: task-based, which do not require user sign-in, and shared with individual sign-in, used by multiple people across shifts. The latter is increasingly common as workflows digitize. The article strongly advises against shared credentials due to security and auditability risks. Instead, individual sign-in is recommended even for shared devices when accessing corporate systems or sensitive data. A checklist helps validate identity choices based on data access and compliance needs. The article highlights QR code authentication as a streamlined sign-in method for shared devices, balancing security, speed, and ease of use. Conditional Access policies are essential for securing these environments and should be aligned with the actual usage model. Real-world testing is crucial to ensure chosen solutions support intended workflows and security controls. The next article will cover Microsoft Intune enrollment models.