CONTROLLING ENABLEMENT OF RESOURCES

摘要

The application relates to systems, devices and methods for controlling enablement of resources based on a number of tokens in a token store. A resource is enabled when a number of tokens in the token store is greater than a minimum value. The resource is disabled when the number of tokens in the token store is not greater than the minimum value. When used in combination with an authorisation source, such as an authorisation source stored on a server or storage means, the token store provides a grace period during which the resource is enabled, even if the authorisation source is unavailable due to network or hardware failure, or disconnection of the storage means, for example.

主权项

1. A system for controlling enablement of one or more resources, comprising:
at least one control device; and at least one token store for storing a number of tokens, wherein the number of tokens in the at least one token store can range between a minimum value and a maximum value; and wherein: the control device is arranged to enable one or more resources when the number of tokens in the token store is greater than the minimum value and to disable the one or more resources when the number of tokens in the token store is not greater than the minimum value; the number of tokens in the token store increases over time, up to the maximum value, while a criterion is satisfied; and the number of tokens in the token store decreases over time, down to the minimum value, while the criterion is not satisfied.