A security guard stops an individual on private property to ask questions about a suspicious package. The individual feels free to leave at any time during the conversation. Is this considered a 'detention' in the legal sense, requiring Charter warnings?

1. Yes, any interaction between a security guard and a member of the public is a detention.
2. No, if the individual feels free to leave, it is not a detention. Detention implies a psychological or physical restraint.
3. Yes, because the security guard is in a position of authority.
4. Only if the security guard requests identification from the individual.