Methods and systems for obtaining a high trust digital signature from a signer utilizing a high trust signature mobile device are described. Some embodiments include receiving, at the high trust signature mobile device, a signature request regarding a document that requires a high trust digital signature. The signature request includes a one-time signer authentication code. The document that requires the high trust digital signature is displayed on the mobile device. Then a plurality of signer verification elements is obtained. Obtaining a plurality of signer verification elements includes obtaining from the signer a signer-specific password. Furthermore, it includes automatically applying the one-time signer authentication code obtained from the signature request. Then the signature request is replied to by providing the plurality of signer verification elements to a server system for verification. Once the signer verification elements are validated, the high trust signature is applied to the document.
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