@digitalpersona/services
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DigitalPersona Web Access Services
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[Home](./index.md) > [@digitalpersona/services](./services.md) > [IAuthenticationClient](./services.iauthenticationclient.md) > [init](./services.iauthenticationclient.init.md)
## IAuthenticationClient.init() method
Initiates an authentication handshake.
<b>Signature:</b>
```typescript
init(): Promise<AuthenticationData>;
```
<b>Returns:</b>
`Promise<AuthenticationData>`
a promise to return an [AuthenticationData](./services.authenticationdata.md) when ready to continue.