---
title: "nfc card swiped · RUAL Documentation"
description: "Starts the flow when any NFC card or fob is presented to a reader, whether or not it was accepted."
canonical: https://docs.rual.nl/block-types/globals/homeassist_trigger_nfc
language: en
---

# nfc card swiped

This block is part of the [`globals`](https://docs.rual.nl/block-types/globals) group and was last modified in core [`v15.0.0`](https://docs.rual.nl/core-versions/150000).

Starts the flow when any NFC card or fob is presented to a reader, whether or not it was accepted.

- device `v15.0.0` `value` Only fire for this reader. Leave empty for every reader.

- room `v15.0.0` `value` Only fire for devices in this room. Leave empty for every room.

- card `v15.0.0` `value` Only fire for this card token or actor. Leave empty for any card.

- flow `v15.0.0` `flow`

- device `v15.0.0` `object` The full device: id, name, room, type, capabilities, current state.

- device id `v15.0.0` `value` Stable platform id, e.g. zigbee:0x00158d0007e1a2b3.

- name `v15.0.0` `value` The device's friendly name.

- room `v15.0.0` `value` The room the device is assigned to, empty if none.

- type `v15.0.0` `value` sensor, light, switch, climate, cover, lock or button.

- capability `v15.0.0` `value` Which capability changed, e.g. occupancy, contact, power.

- value `v15.0.0` `value` The new value.

- previous `v15.0.0` `value` The value before this change, empty on the first report.

- at `v15.0.0` `number` Unix seconds the device reported.

Start-of-flow trigger on the nfc capability. Fires when a card is presented, BEFORE and regardless of the access decision : a swipe may be denied. The `value` out-pin carries the card token or actor. Use this to react to a specific card ('when my gym fob is tapped, turn on the porch light') independent of whether it unlocks anything.

| `unifi` |
| --- |
| `nfc` |
| `card` |
| `fob` |
| `badge` |
| `door` |
| `trigger` |

### Version history

Introduced in [`v15.0.0`](https://docs.rual.nl/core-versions/150000).