RJ100 has quite a large peephole into the flight deck, which can enable cabin crew or passengers to look in, provided we haven't used the cover on the inside of the flight deck door to block access.
But even if cabin crew could look in to see us slumped, how would they be able to in through our locked door?
Maybe the Helios jet had a differnt access system, but our door is always locked, and can only be unlocked from inside the cockpit.