# Block Transferables

{% hint style="info" %}
Tappable
{% endhint %}

To prevent grief attacks using the external "token-transfer", account holders can entirely disable this function by inscribing the inscription text below to themselves and tap (=send to yourself) the inscription. This feature is especially important if token-authorities are being used that redeem tokens from their own accounts.

Once tapped (=inscribed and again sent to yourself), incoming inscribe transfers are being skipped/invalidated such that no subsequent transfers using "token-transfer" aren't possible anymore. Existing transferables stay intact and can be used:

```json
{
  "p" : "tap",
  "op" : "block-transferables"
}
```


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