Just drawing your e-signature provides no security from copying this image and placing it on other documents. Also the e-signature cannot detect later edits to your documents.
What’s different about the SigningHub mobile app for iPad, iPhone and Android is that it overcomes these limitations by also creating advanced, long-term PKI digital signatures which sits behind your hand-drawn e-signatures. Each user has his or her private digital signature PKI key securely managed on the server, locally by the user on a smartcard/token or actually within the mobile device. In addition to the secure digital signature SigningHub server also maintains a secure detailed audit trail of all signing operations.
With the SigningHub App you can view your pending documents and sign in seconds, as well as keeping track of the status of your documents.
A quick walk through for SigningHub Mobile App