CrossmintDeviceWalletSigner class final

Hardware-backed approval signer — keys live in Secure Enclave (iOS) or Android Keystore, never in Dart memory.

Device signers are the SDK's default delegated signer: low-friction, used for day-to-day transaction approvals. They are supported on EVM and Stellar wallets, and on Solana wallets whose provider supports them (Swig/Crossmint; Squads does not) — validated server-side.

The locator must follow the device:<publicKeyBase64> format. Use CrossmintWalletsClient.createDeviceSigner to register a new device signer and get a valid locator.

Implemented types

• CrossmintWalletApprovalSigner

Constructors

CrossmintDeviceWalletSigner({required String address, required String locator, DeviceSignerKeyStorage? storage})

Creates a device wallet signer bound to an existing hardware key.

Properties

address → String

The wallet address associated with this signer.

final

hashCode → int

The hash code for this object.

no setter, inherited

locator → String

final

publicKeyBase64 → String

The base64-encoded public key parsed from locator.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

storage → DeviceSignerKeyStorage

The key-storage adapter. Defaults to the platform-native Secure Enclave / Android Keystore implementation when not overridden.

no setter

type → String

no setter, override

Methods

getMappedKey() → Future<String?>

hasLocalKey() → Future<bool>

mapCurrentKeyToAddress() → Future<void>

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

signMessage(String message) → Future<Object>

override

signTransaction(String transaction) → Future<Object>

override

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited