##### 3.2.2.2.8 Verification of Signature on Subscriber Agreement and EV Code Signing Certificate Requests Both the Subscriber Agreement and each non-pre-authorized EV Code Signing Certificate Request MUST be signed. The Subscriber Agreement MUST be signed by an authorized Contract Signer. The EV Code Signing Certificate Request MUST be signed by the Certificate Requester submitting the document, unless the Certificate Request has been pre-authorized in line with [Section 3.2.2.2.7 (4)](#32227-verification-of-name-title-and-authority-of-contract-signer-and-certificate-approver) (pre-Authorized Certificate Approver). If the Certificate Requester is not also an authorized Certificate Approver, then an authorized Certificate Approver MUST independently approve the EV Code Signing Certificate Request. In all cases, applicable signatures MUST be a legally valid and contain an enforceable seal or handwritten signature (for a paper Subscriber Agreement and/or EV Code Signing Certificate Request), or a legally valid and enforceable electronic signature (for an electronic Subscriber Agreement and/or EV Code Signing Certificate Request), that binds the Applicant to the terms of each respective document. 1. **Verification Requirements**: 1. **Signature**: The CA MUST authenticate the signature of the Contract Signer on the Subscriber Agreement and the signature of the Certificate Requester on each EV Code Signing Certificate Request in a manner that makes it reasonably certain that the person named as the signer in the applicable document is, in fact, the person who signed the document on behalf of the Applicant. 2. **Approval Alternative**: In cases where an EV Code Signing Certificate Request is signed and submitted by a Certificate Requester who does not also function as a Certificate Approver, approval and adoption of the EV Code Signing Certificate Request by a Certificate Approver in accordance with the requirements of [Section 3.2.2.2.9](#32229-verification-of-approval-of-ev-code-signing-certificate-request) can substitute for authentication of the signature of the Certificate Requester on such EV Code Signing Certificate Request. 2. **Acceptable Methods of Signature Verification**: Acceptable methods of authenticating the signature of the Certificate Requester or Contract Signer include the following: 1. Contacting the Applicant using a Verified Method of Communication for the Applicant, for the attention of the Certificate Requester or Contract Signer, as applicable, followed by a response from someone who identifies themselves as such person confirming that he/she did sign the applicable document on behalf of the Applicant; 2. A letter mailed to the Applicant's or Agent's address, as verified through independent means in accordance with these Guidelines, for the attention of the Certificate Requester or Contract Signer, as applicable, followed by a response through a Verified Method of Communication from someone who identifies themselves as such person confirming that he/she did sign the applicable document on behalf of the Applicant; 3. Use of a signature process that establishes the name and title of the signer in a secure manner, such as through use of an appropriately secure login process that identifies the signer before signing, or through use of a digital signature made with reference to an appropriately verified certificate; or 4. Notarization by a notary, provided that the CA independently verifies that such notary is a legally qualified notary in the jurisdiction of the Certificate Requester or Contract Signer.