NFC Tags in HA

We have new items in our store. NFC tags, more about those tags you can read at our shop webiste …

Here is guide how to use this tags in Home Assistant automation and why we think it’s pretty cool.

Link to Home Assistant docs: https://www.home-assistant.io/integrations/tag/

Prerequisites¶

Prepare tag for automation¶

Go to Home Assistant Settings in mobile app. You have to give NFC permissions to mobile app.

Go to:

1. Settings
2. Tags
3. Create tag
4. Name your tag eg. LightGarden
5. Click ‘Create and Write tag’
6. Put tag to back of your phone, so it’d be written.

It’s ready. Tag is ready to be used in automation

Automation¶

This can be done either in any version of Home Assistant, on your PC as well.

Go to Automations and Create new automation.

1. Add triger, start typing Tag

2. Choose tag you named

3. Create action you’d like to do, eg light toggle and toggle light.

   

It’s ready!

Safety precautions¶

Those NFC tags are great to open your front gate, doors etc. If you stick it in your car you might use them accidentaly. So let’s check if phone which is triggering this automation is in home zone to be sure. This tutorial assumes that you have your zones configured correctly.

Add condition to automation: template.

put this code

'{{ (states.person|selectattr(''attributes.user_id'', ''eq'',trigger.event.context.user_id)|first).state == "home" }}'

In yaml mode it would look like this:

condition: template
value_template: >-
  {{ (states.person|selectattr(''attributes.user_id'',
  ''eq'',trigger.event.context.user_id)|first).state == "home" }}

That’s make sure that person who triggered automation is in house.