[Wildgoose]

Wouldn't it make more sense to alter the ceiling fans so that excess weight (e.g. a body) will cause them to detach from the ceiling, preferably also triggering an alarm?

[aitchnyu]

I remember an Indian inventor who made a prototype, wonder how it went.

[ctvo]

It may even make more sense to address the root cause of the suicides rather than the method used! You’ll need to resolve for balconies next.