EQEs - Watch Out!

The IPKat spotted this morning the latest issue of the EPO Official Journal. There isn't really anything of much interest, assuming you have been paying attention to announcements such as Montenegro becoming an extension state (which the IPKat noted here), unless you have a particular interest in new fees in Sweden, the EPO's holidays in 2010 or what happened at last month's meeting of the Administrative Council (which has been written about more extensively elsewhere).

What struck the IPKat, however, was the EPO's new Instructions to candidates concerning the conduct of the European qualifying examination, which includes the following rule:

The IPKat is fairly sure the rules weren't this strict last year, otherwise he would have worried about taking his new Casio watch into the exam hall with him, but maybe he has missed out on the latest advances in digital watch technology. Given all the stuff that it is possible to legitimately take to the exam, how is it possible to cheat at the EQEs with a digital watch? Or is this perhaps about the possibility of annoying bleeps? Can anyone assist with a reasoned explanation?