This is a question that pops up in the Orthodox Church from time to time since we also restrict Communion. The way it is handled at my old parish was that a note was put in the bulletin “Can I receive Holy Communion?” with an appropriate explanation of the rule. Additionally when the priest stepped through the Royal Doors with the chalice he would always make a short statement to the effect that while we all long for Christian unity, at present that unity does not exist and that only baptized and chrismated Orthodox Christians, who have prepared themselves through fasting, prayer and recent confession could partake of the Holy Mysteries of the altar.
And lastly anyone not known to the priest who approaches the chalice is likely to get the third degree...
Are you Orthodox?
Have you kept the fast?
When is the last time you went to confession.
The correct answers are yes, yes and within the last 24 hours.
You and I have discussed this before I believe.
The way the Orthodox view reception of Holy Communion is how the Catholic Church used to view it and enforce it.