There is provided a method that includes (a) including in a dataset, data indicative of a time, (b) executing a hash function on the dataset to yield a hash value, and (c) employing the hash value as a password for a user to access a device. There is also provided a method that includes (a) including in a dataset, data indicative of a time, (b) executing a hash function on the dataset to yield a hash value, (c) determining that the hash value matches a password from a user, and (d) granting to the user, access to a device. There are also provided systems that perform the methods and storage devices that contain instructions for causing processors to perform the methods.