Cabin Crew have already got crew pulse swap system up and running.
where is flight crew version? Probably won’t work with all the Ek Compsny restrictions applied!
(PS before you all fall over yourselves praising Ek, this has been available since day 1 when the new system was introduced. Other major US airline pilots have been sitting by the pool down route happily swapping flights for years. EK restricted us and did not make it available!)