Is there any way to sign a PDF on the iPad? I have an iPad mini, I have been using it to give estimates for work and it has worked excellent. The App that I use for invoicing allows me to make up an estimate or invoice, have the customer sign it, and then I could e-mail them a copy. In my state I don't have to take sales tax from my customers under certain conditions, in those cases I have to have them sign the following exemption form: http://www.state.nj.us/treasury/taxation/pdf/other_forms/sales/st8.pdf As you can see, the form is setup to be filled out digitally, however it needs to be signed as well. So what I need is a PDF App for the iPad that will allow my customers to use a stylus to sign the above PDF form. Any ideas? This will make my operation completely paperless.