Why should it be any different for a Deaf child as a hearing child in this incidence?
No need to advertise that the child is Deaf. Every child should be taught their name and phone number of their parents and how to use a phone.
Before mobile/cell phones, when our children (all hearing) were under 5, because we travelled a lot internationally, I had ID bracelets made with both my husband's number and my number on it, together with their name, in the event that they got separated from us. But just the simple rule: If lost, stay where you are, don't move (we will come back to where we last saw you) and don't talk to strangers unless a person in uniform ie: police, airport staff etc. When older of course, there is a set meet-up place.
I have 7 children. I also use the 'buddy system'. Nowadays, all my children except the youngest have mobile/cell phones. My ten-year old knows how to sms/text me or phone her father and siblings. I gave her a phone of her own, because once it was just me and the little kids at home. She had a nightmare that something terrible would happen to me (like falling down the stairs) and she was terrified that she wouldn't know what to do. So, I taught her how to use the phone both voice and text, and how to contact her father etc, in an event of such an emergency. It relieved her concern and fears.
Parents should use common sense in keeping their watchful eye on their children. In busy airports, and crowded places I used a child harness on my toddlers, so they couldn't get separated from me. I used it responsibly.
