According the the BETT website, ( http://www.bettshow.com/page.cfm/link=196 )
“QR codes will be displayed prominently on BETT signage and other marketing collateral enabling visitors to access the site directly from their phones.”
I purchased an iPhone app specially to be able to take note of contact details easily as was suggested on the BETT site. I saw no sign at all of the promised QR codes, & was a little miffed.
If you did the same, here is one of my own for you to scan!