Can a signature be your initials?

Yes, it absolutely could be! Why: your electronic signature is not defined by how it looks. It could even be a glyph.

Your signature's validity is given by other aspects, as explained in this article of ours:

• As per the eSignature (2000) and UETA (2000) Acts passed by the US Government, alongside other requirements (explained in-depth by us here), one of them is this: “Attribution. The signature has to be uniquely identified to the signee and only linked to them”
• Using an electronic signature software such as SignHouse automatically handles that, as such apps easily attribute signatures with identifiable details (e.g. account information, location, IP, etc)
• Another requirement for a digital signature to be valid: “Retention. The documents must be stored for future reference, available to be viewed, reviewed, edited, etc. by both parties”
• SignHouse takes care of this aspect as well.

So yes, your signature can be your initials!