s 18 Secure electronic signature
18.—(1) If, through the application of a specified security procedure, or a commercially reasonable security procedure agreed to by the parties involved, it can be verified that an electronic signature was, at the time it was made —(a) unique to the person using it; (b) capable of identifying such person; (c) created in a manner or using a means under the sole control of the person using it; and (d) linked to the electronic record to which it relates in a manner such that if the record was changed the electronic signature would be invalidated, such signature is treated as a secure electronic signature. (2) Whether a security procedure is commercially reasonable must be determined in accordance with section 17(2).