https://www.canada.ca/en/immigratio...ication/application-forms-guides/imm5476.html
this instructions link clearly states EITHER OPTION IS ACCEPTABLE
The form is
signed by the applicant and representative
submitted through a portal or secure account
Hand signature (also called a wet signature): Print and sign the form by hand.
E-Signature: Any type of insert on PDF forms:
- Typed name
- Adobe’s Fill & Sign or DocuSign (or other 3rd party app/software)
- Scan or an image of a signature
- Check box as indicated
Thumbprint: acceptable if a person is illiterate or cannot make a mark (e.g., an X) for a physical reason.