Re: Equipment Lockout != Security
This is a lockout.
http://www.shardasafety.com/wp-content/uploads/2015/05/Ball_Valve_Lockout_Safety_Products_Locks_Safety_Locks.jpg
Bring your own padlock(s) if you don't trust the ones provided. Now I don't work in factory environments but I am passing familiar with industrial safety measures and like most IT Pro's who have seen things go badly wrong I'm somewhat paranoid.
Would I trust my life to a physical warning sign warning I'm working on equipment backed up with a couple of padlocks physically preventing somebody from throwing the power switch short of deliberately cutting the locks off with an angle grinder? Probably yes.
Would I trust my life to a Bluetooth fob...? Hell no. The list of problems with that idea is so long I hardly know where to begin. What if the signal gets blocked and the machine coding decides that I have left the area as has happened with deaths covered by el reg previously. No way am I trusting my life to a piece of computer code written by somebody in a hurry to meet a deadline that probably didn't have any QA testing "cos that's expensive and the programmer can do it". No, just no.
I'm going with a big physical lock on the breaker for the equipment. Seems far safer to me from my life experience.