For me the best thing is
One short blip to lock ( indicators flash once ) let go..
One long blip and hold to deadlock car ( indicators flash rapidly )..
Sometimes the window roll up feature doesn't work..
In this case I use the clarkson technique of pointing the key card at my head to boost the signal ( sounds + looks stupid ) but works..
One short blip to unlock ( drivers door only ) let go..
One long blip and hold to unlock all doors, boot etc..
Above clarkson technique can also be used to unlock car from a greater distance away..