What should I do? If an old pensioner living alone in a large house but stretches the thread at the entrance and sprinkles flour to see the traces. He does this because it seems that someone is walking in the next room.

It sounds like the elderly person may be feeling unsafe or paranoid, which can be quite concerning. Here are some steps you can take to help them:

**Approach with Compassion**: Speak to the person in a calm and gentle manner. Let them know you care about their wellbeing and are there to help.

**Assess Their Safety**: Ensure that they are safe in their environment. Look for any potential hazards in their home.

**Ask Questions**: Try to understand their feelings and concerns. Ask open-ended questions about why they feel someone is in the house and listen attentively.

**Encourage Professional Help**: Suggest they speak with a healthcare professional or a mental health counselor. They can help address any anxiety or paranoia they may be experiencing.

**Consider Home Security**: Discuss the possibility of installing security measures, such as locks, cameras, or an alarm system, which might help them feel more secure.

**Stay Connected**: If possible, check in on them regularly, either in person or through phone calls. Having someone to talk to can help alleviate feelings of loneliness and fear.

**Involve Family or Friends**: If you feel comfortable, involve their family members or close friends to discuss the situation and find out how they can help.

**Look into Community Resources**: Research local senior services or community programs that offer support for elderly individuals living alone.

**Avoid Dismissing Their Concerns**: Even if you feel their fears are unfounded, validate their feelings. Let them know it’s okay to talk about their fears without judgment.

Assuring the person that they are not alone and that help is available can greatly improve their sense of security.