iDoc Signer is an app for securely signing PDF documents on an Apple iPad running iOS 5.0 or later. With iDoc Signer you can:

- Sign existing digital signature fields in PDF documents
- Create new digital signature fields in PDF documents without Adobe Acrobat
- Place new digital signature fields anywhere in PDF documents and sign them
- Resize and reshape new digital signature fields to fit into existing forms

iDoc Signer collects unique biometric information for every signature instance, so that like handwritten signatures, every iDoc Signer signature is distinguishable. There is no replication of signature images or selection of signature fonts; each and every signature is the result of a specific instance of your writing. In addition to biometric information, iDoc Signer records the name and email address of the signer, the time the signature was collected, and the physical location if available.

Documents signed using iDoc Signer and distributed through the Doc Signer Service use the standard Adobe digsig fields for signatures, so that they can be opened by other software programs for independent validation of the embedded encrypted signatures and verification that the documents have not been changed since the signatures were applied.

For documents that require forensic quality signatures, iDoc Signer supports signing on a Bluetooth connected electronic signature pad, the Topaz SigLite BTA 1x5 Bluetooth Pad, Model T-S460-BTA-R, which collects signature data at a very high resolution and sampling rate.

In mobile applications where an Internet connection is not available, iDoc Signer collects signatures in an offline mode, so that you can distribute signed documents at a later time.