I like this idea. However, the money notaries make is so low, I doubt they would purchase a dedicated device. However, if you made a touch-screen app where the client could sign it, take a picture of their ID, and the rest, you might be on to something. Build it, then get one of the notary associations to adopt it.

Joshua,

I think the main clients would be banks and title companies. I can see them wanting to accept documents notarized using ___ because of the security. What do you think?

They could invest in a device, but making an app for a touch screen tablet would be a good first step and it would be more accessible. You could build in good security.