PDF signatures?
I did a social experiment: at the time of the experiment I worked for a really huge org with an absolute fetish for signature chains. Big, big govt. Anything you can imagine required at least five electronic signatures in a PDF - no matter how inane. Personal record was needing 15 signatures to operate an FCC part 15 transmitter outdoors. FFS! Oh, where was I?
Experiment? On every document I created I made damned sure my electronic signature was invalid. Hundreds of documents. I made sure Adobe would scream about signature errors on every opening. Care to guess how many times a question was raised? That's right... nada!