> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crossmint.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Passkey

> Kotlin Data Class

**Data Class**

```kotlin theme={null}
data class Passkey(val id: String, val name: String, val publicKeyX: String, val publicKeyY: String, val expiresAt: Long? = null) : DelegatedSigner
```

## Constructors

```kotlin theme={null}
constructor(id: String, name: String, publicKeyX: String, publicKeyY: String, expiresAt: Long? = null)
```

## Properties

### expiresAt

```kotlin theme={null}
open override val expiresAt: Long? = null
```

Optional expiration timestamp in milliseconds since Unix epoch. If set, the delegated signer will expire at this time.

### id

```kotlin theme={null}
val id: String
```

### name

```kotlin theme={null}
val name: String
```

### publicKeyX

```kotlin theme={null}
val publicKeyX: String
```

### publicKeyY

```kotlin theme={null}
val publicKeyY: String
```