Wis. Stat. § 137.15: Legal recognition of electronic records, electronic signatures, and electronic contracts.

(1) A record or signature may not be denied legal effect or enforceability solely because it is in electronic form.

(2) A contract may not be denied legal effect or enforceability solely because an electronic record was used in its formation.

(3) If a law requires a record to be in writing, an electronic record satisfies that requirement in that law.

(4) If a law requires a signature, an electronic signature satisfies that requirement in that law.