Patent ID: 8738922

Claim:
A method comprising: (i) providing a computer apparatus having a first monitor configured to display an electronic document to be signed by a signer, (ii) providing a signature capture apparatus having a second monitor and a first unique key electronically stored in the signature capture apparatus, the signature capture apparatus being an individual unit separate from, but in communication with, the computer apparatus and being configured to electronically capture a handwritten signature of the signer and biometric data of the signer's signature, (iii) generating in the computer apparatus a first hash sum of the electronic document to be signed by the signer, (iv) transmitting to the signature capture apparatus one of: (a) the generated first hash sum and (b) the generated first hash sum and the electronic document to be signed, (iv.a) generating a second unique key in the signature capture apparatus by combining the first unique key and the first hash sum, (iv.b) generating a second hash sum by hashing the second unique key generated in the signature capture apparatus, (v) displaying on the first monitor of the computer apparatus the electronic document to be signed by the signer and the first hash sum of the electronic document, (vi) displaying on the second monitor of the signature capture apparatus the first hash sum transmitted from the computer apparatus, (vii) electronically capturing the handwritten signature of the signer made on the signature capture apparatus, thereby generating signature data, (viii) encrypting in the signature capture apparatus one of: (a) the signature data and (b) the signature data and the first hash sum using the generated second hash sum of the second unique key, (ix) transmitting to the computer apparatus one of: (a) the encrypted signature data and (b) the encrypted signature data and the encrypted first hash sum, and (x) storing on a computer-readable medium one of: (a) the encrypted signature data, (b) the encrypted signature data and the encrypted first hash sum and (c) the encrypted signature data, the encrypted first hash sum and the signed electronic document.