Method and system for authorizing an action at a site

A method for authorizing performance of an action at a site, the method comprising:

• registering each user of a plurality of users and at least one mobile communication device associated with that user with an authorization module hosted on an authorization server, identifying each of said at least one mobile communication device by a unique hardware identification number, and specifying the user or users of said plurality of users that are required to authorize the action;
• associating each user of said plurality of users and said at least one mobile communication device associated with that user with the site by the authorization module;
• receiving by the authorization server an authentication request from the site for a user of said plurality of users that is attempting to perform the action at the site from a station;
• sending by the authorization module a confirmation request from the authorization server to said at least one mobile communication device associated with each user of said user or users of said plurality of users that are required to authorize the action, requesting of that user to operate said at least one mobile communication device associated with that user to confirm authorization of the action;
• and
• authorizing performance of the action upon receiving confirmation from the mobile communication devices associated with all said user or users of said plurality of users that are required to authorize the action.