Perform your transactions securely via fax or email through the use of a Fax/email Security Device.  Fax/email security device is a hardware token, which is associated with a specific user that generates a One –Time –Password (authentication code) by pressing a button on the device. Authentication codes are produced and shall be used sequentially. 

Instructions via fax or email should be accompanied by an authentication code, generated by the security device, and will be executed given that the codes are authenticated and signature is verified.