With these issues the subject of legal usability is not completely covered. Enforcement is perhaps the most obvious issue that is not dealt with. There fore I will indicate for what reason enforcement has been omitted as a sepa rate issue. This has the following background. A signature may alleviate eviden tiary burdens that may arise when enforcing a contract, but enforcing a contract involves much more than evidence of the existence and contents of a contract. E-commerce has opened the possibility to engage in cross border business with a low value per transaction. Even if one has the...