Having taken care to check in with a bogus identity and bin the badge, in order to avoid the avalanche of emails and phone calls that followed the last experience, I was pursued around the exhibition by young chaps in T shirts diving off stands to step into my path, asking "how are you?", "let's demonstrate our software!". I tried everything from "I'm not an accountant" to I'm getting angry" all to no avail. Are these guys driven by mystery shopping threats or are they on something? I counted more than 40 accostings before I left in desperation.