@subsection Faucet

Used for dispensing tokens to any address.

It can be used for gas tokens and @emph{ERC20} alike.

The interface is the same whether the faucet is dispensing from existing balance or minting new tokens.

The value dispersed @emph{must} be the same for all addresses.

In general, four criteria are expected to exist in any combination for limiting access to the faucet:

@table @dfn
@item Time
A recipient may only use the faucet again after some time has passed.
@item Balance threshold
A recipient may only use the faucet after its balance is below a certain amount.
@item Membership
A recipient may only use the faucet if it has been added to an access control list.
@item Capacity
The contract has sufficient token funds to dispense the current defined amount to dispense.
@end table

The @emph{check(address)} contract call @emph{must} evaluate all four criteria, and @emph{must} return @code{false} if any of the criteria are not met.


@subsubsection ERC165 Interface identifier

@include ../../build/Faucet.interface

@subsubsection Solidity interface definition

@include ../../build/contract_Faucet.texi

@subsubsection Reference implementations

@itemize
@item
@uref{git://holbrook.no/erc20-faucet.git,}
@item
@uref{git://holbrook.no/eth-faucet.git,}
@end itemize