Legal Binding

In the United States, electronic signatures are covered under the Uniform Electronic Transactions Act (UETA) and Electronic Signatures in Global and National Commerce (ESIGN) law. Passed by the US Congress in 1999 and 2000, respectively, these two laws serve as the framework for electronic commerce implementation in the United States, as most state-level E-commerce laws are identical to UETA or a slightly altered version. These laws specify exactly what constitutes a valid electronic signature, as well as the conditions under which it is legally binding.
An electronic signature is a “sound, symbol, or process, logically associated with a document” such that it is:
1. Unique to each user
2. Under the sole control of the signer
3. Linked to a document in such a way as to prevent tampering, and
4. Capable of being authenticated