I think a very simple law should be put into place which outlaws "NPEs." That would put a dent in the operations of these low-overhead trolls.
Even more so, don't let them directly sue consumers.
If I can walk into Wal Mart and buy a product, and you think that product infringes on your patent, you can sue the company who made it, but the consumer can't be sued.
This is a case of people being sued for using scanners -- technology we've had ready consumer access to for quite a long time.
Consumers should be indemnified from such things -- they didn't infringe on your patent, they probably have no idea what you're talking about. By the time you can walk into a retail store and buy a product it should be too damned late to sue consumers.
This is just shaking down people who are using stuff that has been readily available since the 90s, and which you can buy damned near anywhere -- what's a scanner cost these days? An all in one printer is what, $50?
If they haven't been filing patent lawsuits by now, they've essentially given up any rights to be suing anybody, let alone end users of technology which an be picked up pretty much anywhere.