What a personal detail is

A personal detail is not “anything about me”

A personal detail is information that identifies you. Not every thing you say about yourself is dangerous. A favourite colour is not a personal detail. A nickname in a game is not either. The problem starts where someone can find you in the real world, or where they can pretend to be you.

Three categories you remember:

1. Where you are — address, house number, a street name by a photo, school + class + surname.
2. Who can prove it is you — national ID number, date of birth, an SMS code, a password, a PIN.
3. What can reach you — phone, email, private Discord, a profile where your face and the school name are visible.

When something belongs in one of those categories, you do not send it into chat, onto a public profile, into a group with strangers. You show a parent or a teacher when a service actually needs it — and only on a page you open yourself.

A personal detail is not a secret because you should feel ashamed. It is a key. Whoever has it can open an account, write as you, or find you where you did not want to be found.

What is fine to share

In a game, in the playground, in a chat with friends you know in real life, it is normal:

• a nickname without a surname
• a favourite game, team, colour
• age roughly (“I am in year five”)
• a photo without an address, without a school name tag, without a board with a street name

This belongs to the project 👤 Safer profile. A profile is a calling card for the playground, not an ID card for the letterbox.

What does not belong on a public profile or in a group with strangers:

• full name + school + class
• address, flat number, where you live
• phone, private email
• a photo of an ID, a lunch ticket, a bus ticket with a name

When someone asks “just like that”

“How old are you and where do you live?” in a game lobby.

“I play here. I do not send an address. If you want to play, write a nickname.”

“보내기 your number so I can add you to the group.”

“I make groups with people I know from school. Not here.”

“What is your full name? The teacher wants it.”

“A teacher does not send that through you. I will show a parent or I will go to them at school.”

These sentences do not have to be rude. They should be short. Whoever keeps pushing is not curious. They are weird. You end the chat and tell an adult.

How it fits the projects

🏠 Family rules. One sentence: We do not send personal details into a chat with strangers. Read it out loud with a parent.

👤 Safer profile. Go through your game or social profile. What is hanging there? Delete or change what belongs in the three categories above.

🏫 Campaign for the class. On the poster belongs: An address and a password are not gifts. One sentence even a younger classmate can read.

Now you 💪

With a parent, go through one profile (a game, a network, anything you use). Look for three things: address, full name + school, phone or email.

1. Open the profile. Read the bio out loud. What belongs in “where you are”, “who can prove it is you”, “what can reach you”?

2. Delete or change one thing that does not belong there. If you are not sure, ask a parent.

3. Add a sentence about personal details to family rules. Not your details — the rule.

What to take from this lesson

• A personal detail = someone can identify you or copy you.
• Address, password, phone, school + surname do not belong in chat.
• A nickname and a colour are fine.
• Whoever keeps pushing, you show an adult.

© 2026 Ing. Martin Polak / AlgoRhino · 콘텐츠 이용 약관