# EIN - EIN Transfer

Once an `EIN` has set an Allowance for a Resolver, the Resolver may directly initiate transfers on behalf of the `EIN`. To transfer HYDRO from one `EIN` to another using an `EIN’s` Allowance, call `transferSnowflakeBalanceFrom` with the arguments defined below. Critically, this function is *called by the DApp*, meaning the DApp can enforce any desired permissions on initiating the transaction, including a meta-transaction scheme.

**ARGUMENTS**

| Parameter | Type   | Description                                              |
| --------- | ------ | -------------------------------------------------------- |
| `einFrom` | `uint` | `EIN` of sender - must have allowance set with Resolver. |
| `eintTo`  | `uint` | `EIN` of recipient.                                      |
| `amount`  | `uint` | Amount of HYDRO to be transferred.                       |