Once upon a time not too long ago, document signage involved downloading the document, printing it off, picking up a pen with either black or blue ink and signing off at the appropriate places, scanning the document once signed, uploading it, attaching the paperwork to an email, and then finally sending off that email back in reply with your signature.

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"Their mill is the printer, printing off document after document after document and just having people sign them, " said Ice Legal attorney Chris Immel.

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In another demonstration, a printer that was printing a tax document with social security numbers scanned the document and sent it to another system.

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It sold 2.5 million by its third year and this year, so far, about 3 million users have downloaded its product, which specialize in document viewing, PDF writing and printing from smartphones and tablets.

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But the reality is that given electronic document management today, people end up printing less and managing more.

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So while at LaGuardia airport this morning I am examining my boarding pass and all the data it contains and realize that Delta is still printing the entire frequent flier number on the document.

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At its core, eSignature eliminates the burdensome process of receiving a document (a contract, non-disclosure agreement, or application, for example) in email, printing it out, signing it, scanning it back in, and returning it by email to the sender.

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