The safest ones are UK plugs, for the simple reason that every plug has to have a fuse in it, and all modern outlets are switched. They're followed by recessed 3-prong, isolated plugs (like the Brazil and Danish designs), while flush 2/3 prong outlets like the Italian design are just okay (still safer than USA/Canada outlets due to the fact that the prongs in those are uninsulated).
Anything with a bare or exposed ground is a horrible idea, since it relies on a working GFCI breaker to cut the power if anything on that circuit is shorted to ground. Should the GFCI malfunction for whatever reason, the user could potentially be electrocuted if they touch the exposed ground pin with their bare hands.
The safest ones are UK plugs, for the simple reason that every plug has to have a fuse in it, and all modern outlets are switched. They're followed by recessed 3-prong, isolated plugs (like the Brazil and Danish designs), while flush 2/3 prong outlets like the Italian design are just okay (still safer than USA/Canada outlets due to the fact that the prongs in those are uninsulated).
Anything with a bare or exposed ground is a horrible idea, since it relies on a working GFCI breaker to cut the power if anything on that circuit is shorted to ground. Should the GFCI malfunction for whatever reason, the user could potentially be electrocuted if they touch the exposed ground pin with their bare hands.