[Home](./index.md) > [@digitalpersona/services](./services.md) > [IAuthenticationClient](./services.iauthenticationclient.md) ## IAuthenticationClient interface Set of methods to support an authentication handshake protocol on a client side. Signature: ```typescript export interface IAuthenticationClient ``` ## Methods | Method | Description | | --- | --- | | [continue(handle, data)](./services.iauthenticationclient.continue.md) | Continues the handshake. This method may be called several times until the is called. | | [init()](./services.iauthenticationclient.init.md) | Initiates an authentication handshake. | | [term(handle)](./services.iauthenticationclient.term.md) | Finalizes the authentication handshake. |