US Patent 10430515 Electronic document signatures and signature retrieval involving mobile communication device

Retrieving and sending electronic signatures. A document requiring a signature is sent in an electronic message such as an electronic mail or text message from a computing device of a sender to a mobile communication device of the signor. The signor selects or clicks on a hyperlink within the message to launch a browser on the mobile communication device and download an application to the mobile communication device. The application executes to allow the signor to touch a screen of the mobile communication device and generate a signature that is incorporated into the document and transmitted back to the sender. In certain embodiments, an electronic tax return is sent from a sender computer to a client mobile communication device, the signor generates a touch screen signature, and the signed tax return is transmitted to the sender for filing with a tax authority.