National law and an agreement between the parties can give legal effect to other kinds of signatures, such as a simple one like HawkOpen’s. Whether it is enough depends on the form the law requires for your document.
In the United States, the federal ESIGN Act and state laws based on UETA say that a signature or contract may not be denied legal effect solely because it is electronic. That does not make every contract valid, and some kinds of documents are excluded. Other countries, such as Brazil, have their own rules.
HawkOpen offers only a simple signature. The HawkOpen e-signature is a preview version until external file scanning is switched on. When the form of your document matters, ask a lawyer before you sign.