Save signature: when this check box is selected, and you're signed in to acrobat reader or acrobat, the added signature is saved securely in adobe document cloud for reuse. 1) open acrobat reader and navigate to the preferences menu, as show below. if you find these instructions do not work for your version of adobe, please contact your it support person. How to create a digital signature in adobe note: this example is adobe acrobat pro dc.