Every day in the workplace, documents require people to sign them. If you want to use PDF document, then you will probably want to digitally sign them. To do this on your PC, you need a Digi-ID™ [1] digital signature and Digi-Seal™ Desktop [2]. The following video shows how to get your Digi-ID™ digital signature and how to configure Digi-Seal™ Desktop to use it.
Links:
[1] https://www.digi-sign.com/digi-id
[2] https://www.digi-sign.com/digi-seal/desktop
[3] http://www.youtube.com/watch?v=947ikMHwRVw
[4] https://www.digi-sign.com/product/digi-seal/desktop