WORK MACHINE ACTIVATION SYSTEM AND METHOD OF ACTIVATING WORK MACHINE

A work machine activation system includes a management device and an authentication device. The management device stores authentication information usable to authenticate a plurality of operators who are able to operate a work machine. The authentication device authenticates an operator operating the work machine. The authentication device includes a storage unit that stores the authentication information of an operator authenticated in the past, and an authentication unit that authenticates the operator based on the authentication information stored in the storage unit when the management device has not been activated.