Can I export my signature from Preview on one Mac and import it on another?

A follow on to this question about extracting the signature image . Is it possible to just copy the plist file containing the signature from one Mac to another? Is there a recommended method for exporting and import signatures from one Mac to another I should follow instead? I could "sign" a blank PDF and take a screen shot of it but but I really want the same password to go along with the image so it's 100% the same signature on the other Mac as the one I'm using on this Mac.