A personal power of attorney

is legally valid as long as it has the signature of the principal and does not necessarily require fingerprinting.

"General Principles of Civil Law"

Article 65

The agency for civil legal acts may be in written form or verbal form. If the law requires a written form, the written form shall be used.

A written power of attorney for an agent shall state the name of the agent, matters of agency, authority and period, and shall be signed or sealed by the principal.