CES this year's focus appears to be security. Not security products, but security in the form of bag restrictions, bag searches, metal detectors etc. You can read the official New Bag Restrictions for 2016 here.

None of my backpacks fit the size limitation of 12” x 17” x 6" (30 cm x 43 cm x 15 cm). So I'm pretty much not going in as press (even press have to carry everything), and I'm not going to bring a lot of gear for coverage.

As a warning:

"What to Expect On-Site

Bags will be searched. We suggest you use clear bags (mesh, plastic, vinyl, etc.) to expedite this process.
Everyone will be subject to metal detector screening and body pat downs upon entering show premises. CTA will conduct searches at specific points to ensure quick and easy access to exhibit halls and reduce the number of times you have to go through security.
Bag check availability at show venues will be extremely limited. Please keep this in mind if you are bringing your luggage to the show. Please allow extra time for checking and retrieving your luggage.
Expect more security and law enforcement personnel both inside and outside of show properties.
As precautionary measures only, you will see police officers in armored gear and explosive detection dogs throughout various CES facilities.
While we will be as sensitive to lines and inconvenience as possible, you can expect delays entering show facilities."

Update on 2016-01-07 18:30 by Mike Mu

Security was lax by the time I got there. I didn't see any barrier set up, bag checks were spotty - but it may just be that nobody had a big bag. Still, I saw plenty of bags that exceeded the bag size requirements during the show.

One person was riding a Segway. Plenty of hoverboards being demo'd. I did see a K9 unit roaming the entrance area.