US Patent 11521446 Automatic physical access

Physical access to secure areas is automatically performed based on presence or detection of a wireless device. A unique identifier of a wireless cellular device, for example, may be pre-authorized for occupants, employees, and tenants of a building. Contractors and vendors may also have their wireless cellular devices pre-approved for access. When the wireless cellular device is detected by a network serving the secure area, its unique identifier may be compared to databases or lists of approved cellular devices. Physical access may thus be automatically granted, based on possession of a recognized cellular device.